EXHIBIT 4.4

                                                                  EXECUTION COPY

================================================================================

                       NOTES REGISTRATION RIGHTS AGREEMENT

                           Dated as of April 12, 1999

                                  by and among

                        PACKAGING CORPORATION OF AMERICA,

                        the Guarantors Signatories Hereto

                                       and

                          J. P. MORGAN SECURITIES INC.

                                       and

                           BT ALEX.BROWN INCORPORATED

================================================================================



      This Notes Registration Rights Agreement (this "Agreement") is made and
entered into as of April 12, 1999, by and among Packaging Corporation of
America, a Delaware corporation (the "Company"), the subsidiaries of the Company
listed on the signature pages hereto (the "Guarantors" and together with the
Company, the "Issuers") and J.P. Morgan Securities Inc. and BT Alex.Brown
Incorporated (each an "Initial Purchaser" and, collectively, the "Initial
Purchasers"), each of whom has agreed to purchase the Company's 9 5/8% Senior
Subordinated Notes due 2009 (the "Series A Notes") pursuant to the Purchase
Agreement (as defined below).

      This Agreement is made pursuant to the Purchase Agreement, dated March 30,
1999 (the "Purchase Agreement"), by and among the Issuers and the Initial
Purchasers. In order to induce the Initial Purchasers to purchase the Series A
Notes, the Issuers have agreed to provide the registration rights set forth in
this Agreement. The execution and delivery of this Agreement is a condition to
the obligations of the Initial Purchasers set forth in Section 6 of the Purchase
Agreement. Capitalized terms used herein and not otherwise defined shall have
the meaning assigned to them in the Indenture, dated April 12, 1999, by and
among the Issuers and United States Trust Company of New York, as Trustee (the
"Trustee"), relating to the Series A Notes and the Series B Notes (as defined in
Section 1 herein) (the "Indenture").

      The parties hereby agree as follows:

SECTION 1. DEFINITIONS

      As used in this Agreement, the following capitalized terms shall have the
following meanings:

      Act: The Securities Act of 1933, as amended.

      Affiliate: As defined in Rule 144 of the Act.

      Broker-Dealer: Any broker or dealer registered under the Exchange Act.

      Business Day: Any day except a Saturday, Sunday or other day in the City
of New York on which banks are authorized or ordered to close.

      Closing Date: The date hereof.

      Commission: The Securities and Exchange Commission.

      Consummate: An Exchange Offer shall be deemed "Consummated" for purposes
of this Agreement upon the occurrence of (a) the filing and effectiveness under
the Act of the Exchange Offer Registration Statement relating to the Series B
Notes to be issued in the Exchange Offer, (b) the maintenance of such Exchange
Offer Registration Statement continuously effective and the keeping of such
Exchange Offer open for a period not less than the minimum period required
pursuant to Section 3(b) hereof and (c) the delivery by the Company to the
Registrar under the Indenture of the Series B Notes to be registered in the same
aggregate principal amount as the aggregate principal amount of Series A Notes
tendered by the Holders thereof pursuant to the Exchange Offer.

      Effectiveness Deadline: As defined in Section 3(a) and 4(a) hereof.

      Exchange Act: The Securities Exchange Act of 1934, as amended.

      Exchange Offer: The exchange and issuance by the Company of a principal
amount of Series B Notes (which shall be registered pursuant to the Exchange
Offer Registration Statement) equal to the



outstanding principal amount of Series A Notes that are tendered by such Holders
in connection with such exchange and issuance.

      Exchange Offer Registration Statement: The Registration Statement relating
to the Exchange Offer, including the related Prospectus.

      Filing Deadline: As defined in Sections 3(a) and 4(a) hereof.

      Guarantors: The Guarantors defined in the preamble hereto and any Person
which becomes a guarantor of Notes after the date hereof pursuant to the terms
of the Indenture.

      Holder: As defined in Section 2 hereof.

      Indemnified Holder: As defined in Section 8(a) hereof.

      Indemnified Person: As defined in Section 8(c) hereof.

      Indemnifying Person: As defined in Section 8(c) hereof.

      Liquidated Damages: As defined in Section 5 hereof.

      Notes: Series A Notes and Series B Notes (including guarantees thereof by
the Guarantors).

      Person: An individual, partnership, limited liability company,
corporation, trust, unincorporated organization, or a government or agency or
political subdivision thereof.

      Prospectus: The prospectus included in a Registration Statement at the
time such Registration Statement is declared effective, as amended or
supplemented by any prospectus supplement and by all other amendments thereto,
including post-effective amendments, and all material incorporated by reference
into such Prospectus.

      Recommencement Date: As defined in Section 6(d) hereof.

      Registration Default: As defined in Section 5 hereof.

      Registration Statement: Any registration statement of the Issuers relating
to (a) an offering of any Series B Notes (including guarantees thereof by the
Guarantors) pursuant to an Exchange Offer or (b) the registration for resale of
Transfer Restricted Securities pursuant to the Shelf Registration Statement, in
each case, (i) that is filed pursuant to the provisions of this Agreement and
(ii) including the Prospectus included therein, all amendments and supplements
thereto (including post-effective amendments) and all exhibits and material
incorporated by reference therein.

      Rule 144: Rule 144 promulgated under the Act.

      Series B Notes: The Company's 9 5/8% Series B Senior Subordinated Notes
due 2009 to be issued pursuant to the Indenture: (i) in the Exchange Offer or
(ii) as contemplated by Section 4 hereof.

      Shelf Registration Statement: As defined in Section 4 hereof.

      Suspension Notice: As defined in Section 6(d) hereof.



      TIA: The Trust Indenture Act of 1939 (15 U.S.C. Section 77aaa-77bbbb) as
in effect on the date of the Indenture.

      Transfer Restricted Securities: Each Note, until the earliest to occur of
(a) the date on which such Note is exchanged in an Exchange Offer and entitled
to be resold to the public by the Holder thereof without complying with the
prospectus delivery requirements of the Act, (b) the date on which such Note has
been disposed of in accordance with a Shelf Registration Statement, (c) the date
on which such Note is disposed of by a Broker-Dealer pursuant to the "Plan of
Distribution" contemplated by an Exchange Offer Registration Statement
(including the delivery of the Prospectus contained therein) or (d) the date on
which such Note is distributed to the public pursuant to Rule 144 under the Act.

SECTION 2. HOLDERS

      A Person is deemed to be a holder of Transfer Restricted Securities (each,
a "Holder") whenever such Person owns Transfer Restricted Securities.

SECTION 3. REGISTERED EXCHANGE OFFER

      (a) Unless the Exchange Offer shall not be permitted by applicable federal
law or policy of the Commission (after the procedures set forth in Section
6(a)(i) below have been complied with), the Issuers shall use all commercially
reasonable efforts to (i) cause the Exchange Offer Registration Statement to be
filed with the Commission on or prior to the date that is 60 days after the
Closing Date (such 60th day being the "Filing Deadline"), (ii) use all
commercially reasonable efforts to cause such Exchange Offer Registration
Statement to become effective on or prior to the date that is 150 days after the
Closing Date (such 150th day being the "Effectiveness Deadline"), (iii) in
connection with the foregoing, (A) file all pre-effective amendments to such
Exchange Offer Registration Statement as may be necessary in order to cause it
to become effective, (B) file, if applicable, a post-effective amendment to such
Exchange Offer Registration Statement pursuant to Rule 430A under the Act and
(C) cause all necessary filings, if any, in connection with the registration and
qualification of the Series B Notes to be made under the Blue Sky laws of such
jurisdictions as are necessary to permit Consummation of the Exchange Offer, and
(iv) upon the effectiveness of such Exchange Offer Registration Statement, use
all commercially reasonable efforts to commence and Consummate the Exchange
Offer. The Exchange Offer shall be on the appropriate form permitting
registration of the Series B Notes to be offered in exchange for the Series A
Notes that are Transfer Restricted Securities and to permit resales of Series B
Notes by any Broker-Dealer that tendered into the Exchange Offer for Series A
Notes that such Broker-Dealer acquired for its own account as a result of market
making activities or other trading activities (other than Series A Notes
acquired directly from the Company or any of its Affiliates) as contemplated by
Section 3(c) below.

      (b) The Issuers shall use all commercially reasonable efforts to cause the
Exchange Offer Registration Statement to be effective continuously, and shall
keep the Exchange Offer open for a period of not less than the minimum period
required under applicable federal and state securities laws to Consummate the
Exchange Offer; provided, however, that in no event shall such period be less
than 20 Business Days. The Issuers shall cause the Exchange Offer to comply with
all applicable federal and state securities laws. No securities other than the
Series B Notes and the guarantees thereof, and the New Preferred Stock or, if
issued in exchange therefor, the New Exchange Debentures, shall be included in
the Exchange Offer Registration Statement. The Issuers shall use all
commercially reasonable efforts to cause the Exchange Offer to be Consummated on
or prior to the date that is 30 Business Days after the Exchange Offer
Registration Statement has become effective, or longer, if required by the
federal securities laws.



      (c) The Issuers shall include a "Plan of Distribution" section in the
Prospectus contained in the Exchange Offer Registration Statement and indicate
therein that (i) any Broker-Dealer who holds Transfer Restricted Securities that
were acquired for the account of such Broker-Dealer as a result of market-making
activities or other trading activities (other than Transfer Restricted
Securities acquired directly from the Company or any Affiliate of the Company),
may exchange such Transfer Restricted Securities pursuant to the Exchange Offer,
however, such Broker-Dealer may be deemed to be an "underwriter" within the
meaning of the Act and must, therefore, deliver a prospectus meeting the
requirements of the Act in connection with its initial sale of any Series B
Notes received by such Broker-Dealer in the Exchange Offer and (ii) the
Prospectus contained in the Exchange Offer Registration Statement may be used to
satisfy such prospectus delivery requirement. Such "Plan of Distribution"
section shall also contain all other information with respect to such sales by
such Broker-Dealers that the Commission may require in order to permit such
sales pursuant thereto, but such "Plan of Distribution" shall not name any such
Broker-Dealer or disclose the amount of Transfer Restricted Securities held by
any such Broker-Dealer, except to the extent required by the Commission as a
result of a change in policy, rules or regulations after the date of this
Agreement.

      To the extent necessary to ensure that the Exchange Offer Registration
Statement is available for sales of Series B Notes by Broker-Dealers, the
Issuers agree to use all commercially reasonable efforts to keep the Exchange
Offer Registration Statement continuously effective, supplemented and amended as
required by the provisions of Section 6(c) hereof and in conformity with the
requirements of this Agreement, the Act and the policies, rules and regulations
of the Commission as announced from time to time, for a period of 180 days from
the date on which the Exchange Offer is Consummated, or such shorter period as
will terminate when all Transfer Restricted Securities covered by such
Registration Statement have been sold pursuant thereto. The Issuers shall
promptly provide sufficient copies of the latest version of such Prospectus to
such Broker-Dealers promptly upon request, and in no event later than one day
after such request, at any time during such period.

SECTION 4. SHELF REGISTRATION

      (a) Shelf Registration. If (i) the Exchange Offer is not permitted by
applicable law or policy of the Commission (after the Issuers have complied with
the procedures set forth in Section 6(a)(i) below) or (ii) any Holder of
Transfer Restricted Securities shall notify the Company in writing within 20
Business Days following the Consummation of the Exchange Offer that (A) upon
advice of counsel such Holder was prohibited by law or Commission policy from
participating in the Exchange Offer or (B) such Holder may not resell the Series
B Notes acquired by it in the Exchange Offer to the public without delivering a
prospectus and the Prospectus contained in the Exchange Offer Registration
Statement is not appropriate or available for such resales by such Holder or (C)
such Holder is a Broker-Dealer and holds Series A Notes acquired directly from
the Company or any of its Affiliates, then the Issuers shall:

      (x) use all commercially reasonable efforts to cause to be filed, on or
prior to 60 days after the earlier of (i) the date on which the Company
determines that the Exchange Offer Registration Statement cannot be filed as a
result of clause (a)(i) above and (ii) the date on which the Company receives
the notice specified in clause (a)(ii) above, (such earlier date, the "Filing
Deadline"), a shelf registration statement pursuant to Rule 415 under the Act
(which may be an amendment to the Exchange Offer Registration Statement (the
"Shelf Registration Statement")), relating to all Transfer Restricted Securities
of Holders which shall have provided the information required pursuant to
Section 4(b) hereof, and

      (y) use all commercially reasonable efforts to cause such Shelf
Registration Statement to become effective on or prior to 120 days after the
Filing Deadline (such 120th day the "Effectiveness Deadline").



      If, after the Issuers have filed an Exchange Offer Registration Statement
that satisfies the requirements of Section 3(a) above, the Company is required
to file and make effective a Shelf Registration Statement solely because the
Exchange Offer is not permitted under applicable federal law or policy of the
Commission (i.e., clause (a)(i) above), then the filing of the Exchange Offer
Registration Statement shall be deemed to satisfy the requirements of clause (x)
above; provided that, in such event, the Issuers shall remain obligated to meet
the Effectiveness Deadline set forth in clause (y).

      The Issuers shall use all commercially reasonable efforts to keep any
Shelf Registration Statement required by this Section 4(a) continuously
effective, supplemented and amended as required by and subject to the provisions
of Sections 6(b) and (c) hereof to the extent necessary to ensure that it is
available for sales of Transfer Restricted Securities by the Holders thereof
entitled to the benefit of this Section 4(a) and to ensure that it conforms with
the requirements of this Agreement, the Act and the policies, rules and
regulations of the Commission as announced from time to time, for a period of at
least two years (as extended pursuant to Section 6(c)(i)) following the Closing
Date, or such shorter period as will terminate when all Transfer Restricted
Securities covered by such Shelf Registration Statement have been sold pursuant
thereto.

      (b) Provision by Holders of Certain Information in Connection with the
Shelf Registration Statement. No Holder of Transfer Restricted Securities may
include any of its Transfer Restricted Securities in any Shelf Registration
Statement pursuant to this Agreement unless and until such Holder furnishes to
the Company in writing, within 10 days after receipt of a request therefor, the
information specified in Item 507 or 508 of Regulation S-K, as applicable, of
the Act for use in connection with any Shelf Registration Statement or
Prospectus or preliminary Prospectus included therein. No Holder of Transfer
Restricted Securities shall be entitled to Liquidated Damages pursuant to
Section 5 hereof unless and until such Holder shall have provided all such
information (it being understood that Liquidated Damages shall cease to accrue
for the benefit of any Holder who fails to provide such information). Each
selling Holder agrees to promptly furnish additional information required to be
disclosed in order to make the information previously furnished to the Company
by such Holder not materially misleading.

SECTION 5. LIQUIDATED DAMAGES

      If (i) any Registration Statement required by this Agreement is not filed
with the Commission on or prior to the applicable Filing Deadline, (ii) any such
Registration Statement has not been declared effective by the Commission on or
prior to the applicable Effectiveness Deadline, (iii) the Exchange Offer has not
been Consummated within 30 Business Days after the Exchange Offer Registration
Statement is first declared effective by the Commission or (iv) subject to
Section 6(c)(i), any Registration Statement required by this Agreement is filed
and declared effective but thereafter ceases to be effective or fails to be
usable for its intended purpose without being succeeded immediately by a
post-effective amendment to such Registration Statement that cures such failure
and that is itself declared effective immediately (each such event referred to
in clauses (i) through (iv), a "Registration Default"), then, subject to Section
4(b), the Issuers hereby jointly and severally agree to pay to each Holder of
Transfer Restricted Securities affected thereby liquidated damages ("Liquidated
Damages"), with respect to the first 90-day period immediately following the
occurrence of the first Registration Default in an amount equal to a per annum
rate of 0.25% on the principal amount of Transfer Restricted Securities held by
such Holder. The amount of Liquidated Damages described in the preceding
sentence shall increase by an additional per annum rate of 0.25% with respect to
each subsequent 90-day period until all Registration Defaults have been cured,
up to a maximum amount of Liquidated Damages for all Registration Defaults of
1.00% per annum on the principal amount of Notes constituting Transfer
Restricted Securities; provided that the Issuers shall in no event be required
to pay Liquidated Damages for more than one Registration Default at any given
time. Notwithstanding



anything to the contrary set forth herein, (1) upon filing of the Exchange Offer
Registration Statement (and/or, if applicable, the Shelf Registration
Statement), in the case of (i) above, (2) upon the effectiveness of the Exchange
Offer Registration Statement (and/or, if applicable, the Shelf Registration
Statement), in the case of (ii) above, (3) upon Consummation of the Exchange
Offer, in the case of (iii) above, or (4) upon the filing of a post-effective
amendment to the Registration Statement or an additional Registration Statement
that causes the Exchange Offer Registration Statement (and/or, if applicable,
the Shelf Registration Statement) to again be declared effective or made usable
in the case of (iv) above, the Liquidated Damages payable with respect to the
Transfer Restricted Securities as a result of such clause (i), (ii), (iii) or
(iv), as applicable, shall cease.

      All accrued Liquidated Damages shall be paid to the Holders entitled
thereto, in the manner provided for the payment of interest in the Indenture, on
each Interest Payment Date, as more fully set forth in the Indenture and the
Notes. All obligations of the Issuers set forth in the preceding paragraph that
are outstanding with respect to any Transfer Restricted Security at the time
such security ceases to be a Transfer Restricted Security shall survive until
such time as all such obligations with respect to such security shall have been
satisfied in full.

SECTION 6. REGISTRATION PROCEDURES

      (a) Exchange Offer Registration Statement. In connection with the Exchange
Offer, the Issuers shall (x) comply with all applicable provisions of Section
6(c) below, (y) use all commercially reasonable efforts to effect such exchange
and to permit the resale of Series B Notes by any Broker-Dealer that tendered in
the Exchange Offer Series A Notes that such Broker-Dealer acquired for its own
account as a result of its market making activities or other trading activities
(other than Series A Notes acquired directly from the Company or any of its
Affiliates) being sold in accordance with the intended method or methods of
distribution thereof, and (z) comply with all of the following provisions:

            (i) If, following the date hereof there has been announced a change
      in Commission policy with respect to exchange offers such as the Exchange
      Offer, that in the reasonable opinion of counsel to the Company raises a
      substantial question as to whether the Exchange Offer is permitted by
      applicable federal law, the Issuers hereby agree to seek a no-action
      letter or other favorable decision from the Commission allowing the
      Issuers to Consummate an Exchange Offer for such Transfer Restricted
      Securities. The Issuers hereby agree to pursue the issuance of such a
      decision to the Commission staff level. In connection with the foregoing,
      the Issuers hereby agree to take all such other actions as may be
      requested by the Commission or otherwise required in connection with the
      issuance of such decision, including without limitation (A) participating
      in telephonic conferences with the Commission, (B) delivering to the
      Commission staff an analysis prepared by counsel to the Company setting
      forth the legal bases, if any, upon which such counsel has concluded that
      such an Exchange Offer should be permitted and (C) diligently pursuing a
      resolution (which need not be favorable) by the Commission staff.

            (ii) As a condition to its participation in the Exchange Offer, each
      Holder of Transfer Restricted Securities (including, without limitation,
      any Holder who is a Broker Dealer) shall furnish, upon the request of the
      Company, prior to the Consummation of the Exchange Offer, a written
      representation to the Issuers (which may be contained in the letter of
      transmittal contemplated by the Exchange Offer Registration Statement) to
      the effect that (A) it is not an Affiliate of the Company, (B) it is not
      engaged in, and does not intend to engage in, and has no arrangement or
      understanding with any person to participate in, a distribution of the
      Series B Notes to be issued in the Exchange Offer and (C) it is acquiring
      the Series B Notes in its ordinary course



      of business. Each Holder using the Exchange Offer to participate in a
      distribution of the Series B Notes hereby acknowledges and agrees that, if
      the resales are of Series B Notes obtained by such Holder in exchange for
      Notes acquired directly from the Company or an Affiliate thereof, it (1)
      could not, under Commission policy as in effect on the date of this
      Agreement, rely on the position of the Commission enunciated in Morgan
      Stanley and Co., Inc. (available June 5, 1991) and Exxon Capital Holdings
      Corporation (available May 13, 1988), as interpreted in the Commission's
      letter to Shearman & Sterling dated July 2, 1993, and similar no-action
      letters (including, if applicable, any no-action letter obtained pursuant
      to clause (i) above), and (2) must comply with the registration and
      prospectus delivery requirements of the Act in connection with a secondary
      resale transaction and that such a secondary resale transaction must be
      covered by an effective registration statement containing the selling
      security holder information required by Item 507 or 508, as applicable, of
      Regulation S-K.

            (iii) Prior to effectiveness of the Exchange Offer Registration
      Statement, the Issuers shall provide a supplemental letter to the
      Commission (A) stating that the Issuers are registering the Exchange Offer
      in reliance on the position of the Commission enunciated in Exxon Capital
      Holdings Corporation (available May 13, 1988), Morgan Stanley and Co.,
      Inc. (available June 5, 1991) as interpreted in the Commission's letter to
      Shearman & Sterling dated July 2, 1993, and, if applicable, any no-action
      letter obtained pursuant to clause (i) above, (B) including a
      representation that the Issuers have not entered into any arrangement or
      understanding with any Person to distribute the Series B Notes to be
      received in the Exchange Offer and that, to the best of the Issuers'
      information and belief, each Holder participating in the Exchange Offer is
      acquiring the Series B Notes in its ordinary course of business and has no
      arrangement or understanding with any Person to participate in the
      distribution of the Series B Notes received in the Exchange Offer and (C)
      any other undertaking or representation required by the Commission as set
      forth in any no-action letter obtained pursuant to clause (i) above, if
      applicable.

      (b) Shelf Registration Statement. In connection with the Shelf
Registration Statement, the Issuers shall comply with all the provisions of
Section 6(c) below and shall use all commercially reasonable efforts to effect
such registration to permit the sale of the Transfer Restricted Securities being
sold in accordance with the intended method or methods of distribution thereof
(as indicated in the information furnished to the Company pursuant to Section
4(b) hereof), and pursuant thereto the Issuers will prepare and file with the
Commission a Registration Statement relating to the registration on any
appropriate form under the Act, which form shall be available for the sale of
the Transfer Restricted Securities in accordance with the intended method or
methods of distribution thereof within the time periods and otherwise in
accordance with the provisions hereof.

      (c) General Provisions. In connection with any Registration Statement and
any related Prospectus required by this Agreement, the Issuers shall:

            (i) use all commercially reasonable efforts to keep such
      Registration Statement continuously effective and provide all requisite
      financial statements for the period specified in Section 3 or 4 of this
      Agreement, as applicable. Upon the occurrence of any event that would
      cause any such Registration Statement or the Prospectus contained therein
      (A) to contain a material misstatement or omission or (B) not to be
      effective and usable for resale of Transfer Restricted Securities during
      the period required by this Agreement, the Issuers shall file promptly an
      appropriate amendment to such Registration Statement curing such defect,
      and, if Commission review is required, use all commercially reasonable
      efforts to cause such amendment to be declared effective as soon as
      practicable. Notwithstanding the foregoing, if the Board of Directors of
      the



      Company determines in good faith that it is in the best interests of the
      Issuers not to disclose the existence of facts surrounding any proposed or
      pending material corporate transaction or other material development
      involving the Issuers, the Issuers may allow the Shelf Registration to
      fail to be effective or the Prospectus contained therein to be unusable as
      a result of such nondisclosure for up to 60 days in any year during the
      two-year period of effectiveness required by Section 4 hereof.

            (ii) prepare and file with the Commission such amendments and
      post-effective amendments to the applicable Registration Statement as may
      be necessary to keep such Registration Statement effective for the
      applicable period set forth in Section 3 or 4 hereof, as the case may be;
      cause the Prospectus to be supplemented by any required Prospectus
      supplement, and as so supplemented to be filed pursuant to Rule 424 under
      the Act, and to comply fully with Rules 424, 430A and 462, as applicable,
      under the Act in a timely manner; and comply with the provisions of the
      Act with respect to the disposition of all securities covered by such
      Registration Statement during the applicable period in accordance with the
      intended method or methods of distribution by the sellers thereof set
      forth in such Registration Statement or supplement to the Prospectus;

            (iii) with respect to a Shelf Registration Statement, advise the
      selling Holders promptly and, if requested by such Persons, confirm such
      advice in writing, (A) when the Prospectus or any Prospectus supplement or
      post-effective amendment has been filed, and, with respect to any
      applicable Registration Statement or any post-effective amendment thereto,
      when the same has become effective, (B) of any request by the Commission
      for amendments to the Registration Statement or amendments or supplements
      to the Prospectus or for additional information relating thereto, (C) of
      the issuance by the Commission of any stop order suspending the
      effectiveness of the Registration Statement under the Act or of the
      suspension by any state securities commission of the qualification of the
      Transfer Restricted Securities for offering or sale in any jurisdiction,
      or the initiation of any proceeding for any of the preceding purposes, (D)
      of the existence of any fact or the happening of any event that makes any
      statement of a material fact made in the Registration Statement, the
      Prospectus, any amendment or supplement thereto or any document
      incorporated by reference therein untrue, or that requires the making of
      any additions to or changes in the Registration Statement in order to make
      the statements therein not misleading, or that requires the making of any
      additions to or changes in the Prospectus in order to make the statements
      therein, in the light of the circumstances under which they were made, not
      misleading. If at any time the Commission shall issue any stop order
      suspending the effectiveness of the Registration Statement, or any state
      securities commission or other regulatory authority shall issue an order
      suspending the qualification or exemption from qualification of the
      Transfer Restricted Securities under state securities or Blue Sky laws,
      the Issuers shall use all commercially reasonable efforts to obtain the
      withdrawal or lifting of such order at the earliest possible time;

            (iv) subject to Section 6(c)(i), if any fact or event contemplated
      by Section 6(c)(iii)(D) above shall exist or have occurred, prepare a
      supplement or post-effective amendment to the Registration Statement or
      related Prospectus or any document incorporated therein by reference or
      file any other required document so that, as thereafter delivered to the
      purchasers of Transfer Restricted Securities, the Prospectus will not
      contain an untrue statement of a material fact or omit to state any
      material fact necessary to make the statements therein, in the light of
      the circumstances under which they were made, not misleading;

            (v) furnish to the Initial Purchasers and with respect to a Shelf
      Registration Statement, each selling Holder named in any Registration
      Statement or Prospectus in connection with such sale, if any, before
      filing with the Commission, copies of any Registration Statement or any



      Prospectus included therein or any amendments or supplements to any such
      Registration Statement or Prospectus (including all documents incorporated
      by reference after the initial filing of such Registration Statement),
      which documents will be subject to the review and comment of such Holders
      in connection with such sale, if any, for a period of at least five
      Business Days, and the Company will not file any such Registration
      Statement or Prospectus or any amendment or supplement to any such
      Registration Statement or Prospectus (including all such documents
      incorporated by reference) to which the selling Holders of the Transfer
      Restricted Securities covered by such Registration Statement in connection
      with such sale, if any, shall reasonably object within five Business Days
      after the receipt thereof. A selling Holder shall be deemed to have
      reasonably objected to such filing if such Registration Statement,
      amendment, Prospectus or supplement, as applicable, as proposed to be
      filed, contains a material misstatement or omission or fails to comply
      with the applicable requirements of the Act;

            (vi) with respect to a Shelf Registration Statement, promptly prior
      to the filing of any document that is to be incorporated by reference into
      a Registration Statement or Prospectus, provide copies of such document to
      the selling Holders in connection with such sale, if any, make the
      Issuers' representatives available for discussion of such document and
      other customary due diligence matters, and include such information in
      such document prior to the filing thereof as such selling Holders may
      reasonably request;

            (vii) with respect to a Shelf Registration Statement, make available
      at reasonable times for inspection by the selling Holders participating in
      any disposition pursuant to such Registration Statement and any attorney
      or accountant retained by such selling Holders, all financial and other
      records, pertinent corporate documents of the Issuers and cause the
      Issuers' officers, directors and employees to supply all information
      reasonably requested by any such selling Holder, attorney or accountant in
      connection with such Registration Statement or any post-effective
      amendment thereto subsequent to the filing thereof and prior to its
      effectiveness;

            (viii) with respect to a Shelf Registration Statement, if requested
      by any selling Holders in connection with such sale, if any, promptly
      include in any Registration Statement or Prospectus, pursuant to a
      supplement or post-effective amendment if necessary, such information as
      such selling Holders may reasonably request to have included therein,
      including, without limitation, information relating to the "Plan of
      Distribution" of the Transfer Restricted Securities; and make all required
      filings of such Prospectus supplement or post-effective amendment as soon
      as practicable after the Company is notified of the matters to be included
      in such Prospectus supplement or post-effective amendment;

            (ix) with respect to a Shelf Registration Statement, furnish to each
      selling Holder in connection with such sale, if any, without charge, at
      least one copy of the Registration Statement, as first filed with the
      Commission, and of each amendment thereto, including all documents
      incorporated by reference therein and all exhibits (including exhibits
      incorporated therein by reference);

            (x) with respect to a Shelf Registration Statement, deliver to each
      selling Holder, without charge, as many copies of the Prospectus
      (including each preliminary prospectus) and any amendment or supplement
      thereto as such Persons reasonably may request; the Issuers hereby consent
      to the use (in accordance with law) of the Prospectus and any amendment or
      supplement thereto by each of the selling Holders in connection with the
      offering and the sale of the Transfer Restricted Securities covered by the
      Prospectus or any amendment or supplement thereto;



            (xi) with respect to a Shelf Registration Statement, upon the
      request of any selling Holder, enter into such agreements (including, if
      the Issuers elect to conduct an underwritten offering, an underwriting
      agreement on customary terms) and make such representations and warranties
      and take all such other actions in connection therewith in order to
      expedite or facilitate the disposition of the Transfer Restricted
      Securities pursuant to any applicable Registration Statement contemplated
      by this Agreement as may be reasonably requested by any Holder of Transfer
      Restricted Securities in connection with any sale or resale pursuant to
      any applicable Shelf Registration Statement. In such connection, the
      Issuers shall:

                  (A) upon the reasonable request of any selling Holder, furnish
            (or in the case of paragraph (2), upon the reasonable request of
            Holders representing at least 50% of the aggregate principal amount
            of Transfer Restricted Securities to be sold pursuant to the Shelf
            Registration Statement, use all commercially reasonable efforts to
            cause to be furnished) to each selling Holder, upon the
            effectiveness of the Shelf Registration Statement:

                        (1) a certificate, dated such date, signed on behalf of
                  the Company and each Guarantor by (x) the President or any
                  Vice President and (y) a principal financial or accounting
                  officer of the Company and such Guarantor, confirming, as of
                  the date thereof, the matters, to the extent applicable, set
                  forth in paragraphs (a) and (b) of Section 6 of the Purchase
                  Agreement and such other similar matters as the selling
                  Holders may reasonably request; and

                        (2) a customary comfort letter or letters, dated the
                  date of effectiveness of the Shelf Registration Statement,
                  from the Company's independent accountants, in the customary
                  form and covering matters of the type customarily covered in
                  comfort letters to underwriters in connection with
                  underwritten offerings, and affirming the matters set forth in
                  the comfort letters delivered pursuant to Section 6(f) of the
                  Purchase Agreement; and

                  (B) deliver such other documents and certificates as may be
            reasonably requested by the selling Holders to evidence compliance
            with clause (A) above and with any customary conditions contained in
            any agreement entered into by the Issuers pursuant to this clause
            (xi);

            (xii) prior to any public offering of Transfer Restricted
      Securities, cooperate with the selling Holders and their counsel in
      connection with the registration and qualification of the Transfer
      Restricted Securities under the securities or Blue Sky laws of such
      jurisdictions as the selling Holders may request and do any and all other
      acts or things necessary or advisable to enable the disposition in such
      jurisdictions of the Transfer Restricted Securities covered by the
      applicable Registration Statement; provided, however, that none of the
      Issuers shall be required to register or qualify as a foreign corporation
      where such Issuer is not now so qualified or to take any action that would
      subject such Issuer to the service of process in suits or to taxation,
      other than as to matters and transactions relating to the Registration
      Statement, in any jurisdiction where such Issuer is not now so subject;

            (xiii) issue, upon the request of any Holder of Series A Notes
      covered by any Shelf Registration Statement contemplated by this
      Agreement, Series B Notes having an aggregate principal amount equal to
      the aggregate principal amount of Series A Notes surrendered to the
      Company by such Holder in exchange therefor or being sold by such Holder,
      such Series B Notes to be registered in the name of such Holder or in the
      name of the purchaser(s) of such Series B Notes;



      in return, the Series A Notes held by such Holder shall be surrendered to
      the Company for cancellation;

            (xiv) in connection with any sale of Transfer Restricted Securities
      that will result in such securities no longer being Transfer Restricted
      Securities, cooperate with the Holders to facilitate the timely
      preparation and delivery of certificates representing Transfer Restricted
      Securities to be sold and not bearing any restrictive legends; and to
      register such Transfer Restricted Securities in such denominations and
      such names as the selling Holders may request at least two Business Days
      prior to such sale of Transfer Restricted Securities;

            (xv) provide a CUSIP number for all Transfer Restricted Securities
      not later than the effective date of a Registration Statement covering
      such Transfer Restricted Securities and provide the Trustee under the
      Indenture with printed certificates for the Transfer Restricted Securities
      which are in a form eligible for deposit with The Depository Trust
      Company;

            (xvi) otherwise use all commercially reasonable efforts to comply
      with all applicable rules and regulations of the Commission, and make
      generally available to their security holders with regard to any
      applicable Registration Statement, as soon as practicable, a consolidated
      earnings statement meeting the requirements of Rule 158 (which need not be
      audited) covering a twelve-month period beginning after the effective date
      of the Registration Statement (as such term is defined in paragraph (c) of
      Rule 158 under the Act);

            (xvii) cause the Indenture to be qualified under the TIA not later
      than the effective date of the first Registration Statement required by
      this Agreement and, in connection therewith, cooperate with the Trustee
      and the Holders to effect such changes to the Indenture as may be required
      for such Indenture to be so qualified in accordance with the terms of the
      TIA; and execute and use all commercially reasonable efforts to cause the
      Trustee to execute, all documents that may be required to effect such
      changes and all other forms and documents required to be filed with the
      Commission to enable such Indenture to be so qualified in a timely manner;
      and

            (xviii) provide promptly to each Holder, upon request, each document
      filed with the Commission pursuant to the requirements of Section 13 or
      Section 15(d) of the Exchange Act.

      (d) Restrictions on Holders. Each Holder agrees by acquisition of a
Transfer Restricted Security that, upon receipt of the notice referred to in
Section 6(c)(iii)(C) or any notice from the Company of the existence of any fact
of the kind described in Section 6(c)(i) or Section 6(c)(iii)(D) hereof (in each
case, a "Suspension Notice"), such Holder will forthwith discontinue disposition
of Transfer Restricted Securities pursuant to the applicable Registration
Statement until (i) such Holder has received copies of the supplemented or
amended Prospectus contemplated by Section 6(c)(iv) hereof, or (ii) such Holder
is advised in writing by the Company that the use of the Prospectus may be
resumed, and has received copies of any additional or supplemental filings that
are incorporated by reference in the Prospectus (in each case, the
"Recommencement Date"). Each Holder receiving a Suspension Notice hereby agrees
that it will either (i) destroy any Prospectuses, other than permanent file
copies, then in such Holder's possession which have been replaced by the Company
with more recently dated Prospectuses or (ii) deliver to the Company (at the
Company's expense) all copies, other than permanent file copies, then in such
Holder's possession of the Prospectus covering such Transfer Restricted
Securities that was current at the time of receipt of the Suspension Notice. The
time period regarding the effectiveness of such Registration Statement set forth
in Section 3 or 4 hereof, as applicable, shall be extended by a number of days
equal to the number of days in the period from and including the date of
delivery of the Suspension Notice to the Recommencement Date.



SECTION 7. REGISTRATION EXPENSES

      (a) All expenses incident to the Issuers' performance of or compliance
with this Agreement will be borne by the Company, regardless of whether a
Registration Statement becomes effective, including without limitation: (i) all
registration and filing fees and expenses; (ii) all fees and expenses of
compliance with federal securities and state Blue Sky or securities laws; (iii)
all expenses of printing (including printing certificates for the Series B Notes
to be issued in the Exchange Offer and printing of Prospectuses), messenger and
delivery services and telephone; (iv) all fees and disbursements of counsel for
the Issuers; (v) all application and filing fees in connection with listing the
Series B Notes on a national securities exchange or automated quotation system
pursuant to the requirements hereof; and (vi) all fees and disbursements of
independent certified public accountants of the Issuers (including the expenses
of any comfort letters required by or incident to such performance).

      The Company will, in any event, bear its and the Guarantors' internal
expenses (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), the expenses of
any Person retained by the Issuers.

      (b) In connection with any Registration Statement required by this
Agreement (including, without limitation, the Exchange Offer Registration
Statement and the Shelf Registration Statement), the Issuers will reimburse the
Initial Purchasers and the Holders of Transfer Restricted Securities being
tendered in the Exchange Offer and/or resold pursuant to the "Plan of
Distribution" contained in the Exchange Offer Registration Statement or
registered pursuant to the Shelf Registration Statement, as applicable, for the
reasonable fees and disbursements of not more than one counsel (not to exceed
$25,000 if such counsel is Latham & Watkins), who shall be Latham & Watkins,
unless another firm shall be chosen by the Holders of a majority in principal
amount of the Transfer Restricted Securities for whose benefit such Registration
Statement is being prepared.

SECTION 8. INDEMNIFICATION

      (a) The Issuers, jointly and severally, agree to indemnify and hold
harmless (i) each Holder and (ii) each Person, if any, who controls any Holder
within the meaning of either Section 15 of the Act or Section 20 of the Exchange
Act (any of the persons referred to in this clause (ii) being hereinafter
referred to as a "controlling person") and (iii) the respective officers,
directors, partners, employees, representatives and agents of any Holder or any
controlling person (any person referred to in clause (i), (ii) or (iii) may
hereinafter be referred to as an "Indemnified Holder") from and against any and
all losses, claims, damages and liabilities (including without limitation the
legal fees and other expenses incurred in connection with any suit, action or
proceeding or any claim asserted) caused by any untrue statement or alleged
untrue statement of a material fact contained in any Registration Statement,
preliminary prospectus or Prospectus (or any amendment or supplement thereto if
the Company shall have furnished any amendments or supplements thereto), or
caused by any omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, except insofar as such losses, claims, damages or liabilities are
caused by any untrue statement or omission or alleged untrue statement or
omission made in reliance upon and in conformity with information relating to
any of the Holders furnished in writing to the Company by such Holder expressly
for use therein.

      (b) Each Holder of Transfer Restricted Securities agrees, severally and
not jointly, to indemnify and hold harmless the Issuers, their directors, their
officers and each person who controls the Issuers within the meaning of either
Section 15 of the Act or Section 20 of the Exchange Act, to the same extent as
the foregoing indemnity from the Issuers to each of the Indemnified Holders, but
only with reference to



information relating to such Indemnified Holder furnished to the Company by such
Indemnified Holder expressly for use in any Registration Statement or any
amendment or supplement thereto.

      (c) If any suit, action, proceeding (including any governmental or
regulatory investigation), claim or demand shall be brought or asserted against
any person in respect of which indemnity may be sought pursuant to Section 8(a)
or 8(b) hereof, such person (the "Indemnified Person") shall promptly notify the
person against whom such indemnity may be sought (the "Indemnifying Person") in
writing, and the Indemnifying Person, upon request of the Indemnified Person,
shall retain counsel reasonably satisfactory to the Indemnified Person to
represent the Indemnified Person and any others the Indemnifying Person may
designate in such proceeding and shall pay the fees and expenses of such counsel
related to such proceeding. In any such proceeding, any Indemnified Person shall
have the right to retain its own counsel, but the fees and expenses of such
counsel shall be at the expense of such Indemnified Person unless (i) the
Indemnifying Person and the Indemnified Person shall have mutually agreed to the
contrary, (ii) the Indemnifying Person has failed within a reasonable time to
retain counsel reasonably satisfactory to the Indemnified Person or (iii) the
named parties in any such proceeding (including any impleaded parties) include
both the Indemnifying Person and the Indemnified Person and representation of
both parties by the same counsel would be inappropriate due to actual or
potential differing interests between them. It is understood that the
Indemnifying Person shall not, in connection with any proceeding or related
proceeding in the same jurisdiction, be liable for the reasonable fees and
expenses of more than one separate firm (in addition to any local counsel) for
all Indemnified Persons, and that all such reasonable fees and expenses shall be
reimbursed as they are incurred. Any such separate firm for the Indemnified
Holders shall be designated in writing by a majority of the Indemnified Holders
and any such separate firm for the Issuers, their directors, their officers and
such control persons shall be designated in writing by the Company. The
Indemnifying Person shall not be liable for any settlement of any proceeding
effected without its written consent, but if settled with such consent or if
there be a final judgment for the plaintiff, the Indemnifying Person agrees to
indemnify any Indemnified Person from and against any loss or liability by
reason of such settlement or judgment. No Indemnifying Person shall, without the
prior written consent of the Indemnified Person, effect any settlement of any
pending or threatened proceeding in respect of which any Indemnified Person is
or could have been a party and indemnity could have been sought hereunder by
such Indemnified Person, unless such settlement includes an unconditional
release of such Indemnified Person from all liability on claims that are the
subject matter of such proceeding.

      (d) If the indemnification provided for in Section 8(a) or 8(b) is
unavailable to an Indemnified Person or insufficient in respect of any losses,
claims, damages or liabilities referred to therein, then each Indemnifying
Person, in lieu of indemnifying such Indemnified Person thereunder, shall
contribute to the amount paid or payable by such Indemnified Person as a result
of such losses, claims, damages or liabilities (i) in such proportion as is
appropriate to reflect the relative benefits received by the Issuers on the one
hand and the Indemnified Holder on the other hand from their sale of Transfer
Restricted Securities or (ii) if the allocation provided by clause (i) above is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the relative benefits referred to in clause (i) above but also the
relative fault of the Issuers on the one hand and the Indemnified Holder on the
other in connection with the statements or omissions that resulted in such
losses, claims, damages or liabilities, as well as any other relevant equitable
considerations. The relative fault of the Issuers on the one hand and the
Indemnified Holder on the other hand shall be determined by reference to, among
other things, whether the untrue or alleged untrue statement of a material fact
or the omission or alleged omission to state a material fact relates to
information supplied by the Issuers or by the Indemnified Holder and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission.



            The Issuers and each Holder agree that it would not be just and
equitable if contribution pursuant to this Section 8 were determined by pro rata
allocation (even if the Holders or the Issuers were treated as one entity for
such purpose) or by any other method of allocation that does not take account of
the equitable considerations referred to in the immediately preceding paragraph.
The amount paid or payable by an Indemnified Person as a result of the losses,
claims, damages and liabilities referred to in the immediately preceding
paragraph shall be deemed to include, subject to the limitations set forth
above, any legal or other expenses reasonably incurred by such Indemnified
Person in connection with investigating or defending any such action or claim.
Notwithstanding the provisions of this Section 8, in no event shall a Holder or
its related Indemnified Holders be required to contribute any amount in excess
of the amount by which the total received by such Holder with respect to the
sale of Transfer Restricted Securities pursuant to a Registration Statement
exceeds the sum of (A) the amount paid by such Holder for such Transfer
Restricted Securities plus (B) the amount of any damages that such Holder has
otherwise been required to pay by reason of such untrue or alleged untrue
statement or omission or alleged omission. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Act) shall be
entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation. The Holders' obligations to contribute pursuant to this
Section 8(d) are several in proportion to the respective principal amount of the
Transfer Restricted Securities held by each Holder hereunder and not joint. The
Issuers' obligations to contribute pursuant to this Section 8 are joint and
several.

            The remedies provided for in this Section 8 are not exclusive and
shall not limit any rights or remedies which may otherwise be available to any
indemnified party at law or in equity.

SECTION 9. RULE 144A AND OTHER INFORMATION

      The Issuers hereby agree with each Holder, for so long as any Transfer
Restricted Securities remain outstanding and during any period in which the
Issuers are not subject to Section 13 or 15(d) of the Exchange Act, to make
available to the Initial Purchasers and, upon request of any Holder of Transfer
Restricted Securities, to any Holder or beneficial owner of Transfer Restricted
Securities in connection with any sale thereof and any prospective purchaser of
such Transfer Restricted Securities designated by such Holder or beneficial
owner, the information required by Rule 144A(d)(4) under the Act in order to
permit resales of such Transfer Restricted Securities pursuant to Rule 144A.

      The Issuers hereby agree with each of the Initial Purchasers, until the
Consummation of the Exchange Offer, for a period of three years from the Closing
Date, to furnish to the Initial Purchasers (i) copies of all reports or other
communications (financial or other) furnished to shareholders of the Company in
their capacity as such, (ii) copies of any reports and financial statements
furnished to or filed with the Commission or any national securities exchange or
inter-dealer quotation system and (iii) such additional information concerning
the business and financial condition of the Issuers as the Initial Purchasers
may reasonably request.

SECTION 10. MISCELLANEOUS

      (a) Remedies. The Issuers acknowledge and agree that any failure by the
Issuers to comply with their obligations under Sections 3 and 4 hereof may
result in material irreparable injury to the Initial Purchasers or the Holders
for which there is no adequate remedy at law, that it will not be possible to
measure damages for such injuries precisely and that, in the event of any such
failure, the Initial Purchasers or any Holder may obtain such relief as may be
required to specifically enforce the Issuers' obligations under Sections 3 and 4
hereof. The Issuers further agree to waive the defense in any action for
specific performance that a remedy at law would be adequate.



      (b) No Inconsistent Agreements. The Issuers will not, on or after the date
of this Agreement, enter into any agreement with respect to their securities
that is inconsistent with the rights granted to the Holders in this Agreement or
otherwise conflicts with the provisions hereof. The rights granted to the
Holders hereunder do not in any way conflict with and are not inconsistent with
the rights granted to the holders of the Issuers' securities under any agreement
in effect on the date hereof.

      (c) Amendments and Waivers. The provisions of this Agreement may not be
amended, modified or supplemented, and waivers or consents to or departures from
the provisions hereof may not be given unless (i) in the case of Section 5
hereof and this Section 10(c)(i), the Company has obtained the written consent
of Holders of all outstanding Transfer Restricted Securities and (ii) in the
case of all other provisions hereof, the Company has obtained the written
consent of Holders of a majority of the outstanding principal amount of Transfer
Restricted Securities (excluding Transfer Restricted Securities held by the
Company or its Affiliates). Notwithstanding the foregoing, a waiver or consent
to departure from the provisions hereof that relates exclusively to the rights
of Holders whose securities are being tendered pursuant to the Exchange Offer,
and that does not affect directly or indirectly the rights of other Holders
whose securities are not being tendered pursuant to such Exchange Offer, may be
given by the Holders of a majority of the outstanding principal amount of
Transfer Restricted Securities subject to such Exchange Offer.

      (d) Third Party Beneficiary. The Holders shall be third party
beneficiaries to the agreements made hereunder between the Issuers, on the one
hand, and the Initial Purchasers, on the other hand, and shall have the right to
enforce such agreements directly to the extent they may deem such enforcement
necessary or advisable to protect its rights or the rights of Holders hereunder.

      (e) Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand-delivery, first-class mail
(registered or certified, return receipt requested), telex, telecopier, or air
courier guaranteeing overnight delivery:

            (i) if to a Holder, at the address set forth on the records of the
      Registrar under the Indenture, with a copy to the Registrar under the
      Indenture; and

            (ii) if to the Issuers:

                 Packaging Corporation of America
                 1900 West Field Court
                 Lake Forest, Illinois 60045
                 Telecopier No.: (847) 482-4559
                 Attention:  Chief Financial Officer

                 With a copy to:

                 Kirkland & Ellis
                 200 East Randolph Drive
                 Chicago, Illinois 60601
                 Telecopier No.: (312) 861-2200
                 Attention:  William S. Kirsch, P.C.

      All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; five Business
Days after being deposited in the mail, postage prepaid, if



mailed; when receipt acknowledged, if telecopied; and on the next business day,
if timely delivered to an air courier guaranteeing overnight delivery.

      Copies of all such notices, demands or other communications shall be
concurrently delivered by the Person giving the same to the Trustee at the
address specified in the Indenture.

      Upon the date of filing of the Exchange Offer or a Shelf Registration
Statement, as the case may be, notice shall be delivered to the Initial
Purchasers in the form attached hereto as Exhibit A.

      (f) Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors and assigns of each of the parties, including
without limitation and without the need for an express assignment, subsequent
Holders of Transfer Restricted Securities; provided, that nothing herein shall
be deemed to permit any assignment, transfer or other disposition of Transfer
Restricted Securities in violation of the terms hereof or of the Purchase
Agreement or the Indenture. If any transferee of any Holder shall acquire
Transfer Restricted Securities in any manner, whether by operation of law or
otherwise, such Transfer Restricted Securities shall be held subject to all of
the terms of this Agreement, and by taking and holding such Transfer Restricted
Securities such Person shall be conclusively deemed to have agreed to be bound
by and to perform all of the terms and provisions of this Agreement, including
the restrictions on resale set forth in this Agreement and, if applicable, the
Purchase Agreement, and such Person shall be entitled to receive the benefits
hereof.

      (g) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

      (h) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

      (i) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE
CONFLICT OF LAWS PROVISIONS THEREOF.

      (j) Severability. In the event that any one or more of the provisions
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable, the validity, legality and enforceability of
any such provision in every other respect and of the remaining provisions
contained herein shall not be affected or impaired thereby.

      (k) Entire Agreement. This Agreement is intended by the parties as a final
expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the subject matter contained herein. There are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein
with respect to the registration rights granted with respect to the Transfer
Restricted Securities. This Agreement supersedes all prior agreements and
understandings between the parties with respect to such subject matter.



      IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                     PACKAGING CORPORATION OF AMERICA

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Cheif Financial Officer,
                                               Secretary and Treasurer


                                     DAHLONEGA PACKAGING CORPORATION

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Secretary


                                     DIXIE CONTAINER CORPORATION

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Secretary


                                     PCA HYDRO, INC.

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Secretary


                                     PCA TOMAHAWK CORPORATION

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Secretary


                                     PCA VALDOSTA CORPORATION

                                     BY: /s/ Richard B. West
                                        ------------------------------------
                                        Name: Richard B. West
                                        Title: Secretary



J.P. MORGAN SECURITIES INC.
BT ALEX.BROWN INCORPORATED

BY: J.P. MORGAN SECURITIES INC.

BY: /s/ Kenneth A. Lang
   ------------------------------------
   Name: Kenneth A. Lang
   Title: Managing Director