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                                                                       Exhibit 3


                                November 7, 1994



Mr. John H. Morrow
Executive Vice President
Puritan-Bennett Corporation
9401 Indian Creek Parkway
Overland Park, Kansas  66225

Dear Mr. Morrow:

         This supplemental letter agreement ("Supplemental Agreement") amends
and supplements the letter agreement dated June 9, 1994 (the "Agreement")
between you and Puritan-Bennett Corporation.  All definitions of terms in the
Agreement shall apply in this Supplemental Agreement.  As amended and
supplemented by this Supplemental Agreement, the Agreement shall remain in full
force and effect.

         1.    The benefits payable to you under Sections 3.1(a) and (b) of the
Agreement are hereby modified by replacing Sections 3.1(a) and (b) in their
entirety with the following:

         1.1   Rights upon Termination by Company other than for Cause, or by
               Employee for Good Reason.  If the Company terminates your
               employment other than for Cause prior to your Normal Retirement
               Date, or if you terminate your employment for Good Reason prior
               to your Normal Retirement Date, then the Company shall have the
               following obligations to you:

               (a)    During the applicable Continued Payment Period, the
                      Company shall make semi-monthly payments to you equal to
                      your semi-monthly base salary in effect immediately prior
                      to the Employment Termination Date plus one twenty-fourth
                      of the annual average of your incentive bonus payments
                      under the MIB Plan or any successor thereto with respect
                      to the three full (12 months) fiscal years immediately
                      preceding the Employment Termination Date (such annual
                      average being referred to herein as the "Average Annual
                      Incentive Payment"), such amounts to be computed without
                      regard to any reductions which may have occurred in
                      breach of this Agreement or following a Change in
                      Control.  Such payments shall be subject to all required
                      withholdings.  The Continued Payment Period shall
                      commence on the Employment Termination Date and shall be
                      a number of weeks determined by adding (a) the greater of
                      (i) four or (ii) two times the number of years Employee
                      has been an employee of the Company (rounding up to the
                      next full year and excluding any intervening periods
                      during which Employee was not an employee of the
                      Company), plus (b) two times the number of $5,000
                      increments (rounded up to the next whole $5,000
                      increment) contained in the Employee's Annual
                      Compensation (as defined
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Mr. John H. Morrow
November 7, 1994
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                      below); provided, that the Continued Payment Period shall
                      not exceed three years.  "Annual Compensation" shall mean
                      the sum of (x) your annual base salary in effect
                      immediately prior to the Employment  Termination Date,
                      plus (y) the Average Annual Incentive Payment.

               (b)    Any outstanding unvested options held by you to purchase
                      stock of the Company that have not otherwise become
                      exercisable under the terms of the Company's stock option
                      plans shall become fully vested and exercisable.

         2.    If your employment is terminated under circumstances in which
               you are entitled to receive payments under Section 3.1 of the
               Agreement, and if you are not otherwise entitled to a bonus
               payment with respect to the fiscal year in which your employment
               is terminated, the Company will pay to you within 30 days after
               the Employment Termination Date, and subject to required
               withholdings, a one-time bonus equal to the product of (i) the
               fraction of a full year represented by the period from the
               beginning of the fiscal year to the Employment Termination Date,
               and (ii) the Average Annual Incentive Payment.

         3.    If your employment is terminated under circumstances in which
               you are entitled to receive payments under Section 3.1 of the
               Agreement, then the Company will provide a benefit under the
               Consolidated Omnibus Budget Reconciliation Act of 1986 ("COBRA")
               and Section 4980B of the Internal Revenue Code of 1986, as
               amended (the "Code"), as follows:  the Company shall pay the
               percentage of the cost of COBRA coverage with respect to your
               coverage status (e.g., individual or family) in effect
               immediately prior to the Employment Termination Date, which
               percentage shall be the fraction (expressed as a percentage),
               the numerator of which shall be the difference between (i) the
               monthly cost of COBRA coverage for your coverage status in
               effect immediately prior to the Employment Termination Date and
               (ii) your monthly contribution toward your coverage in effect
               immediately prior to the Employment Termination Date, and the
               denominator of which shall be the monthly cost of COBRA coverage
               for your coverage status in effect immediately prior to the
               Employment Termination Date.  All of such amounts shall be
               determined as of the day immediately preceding the termination
               of Employee's employment.  The insurance continuation benefits
               paid for hereunder shall be deemed to be part of your COBRA
               coverage.  Such benefits shall be in addition to any other
               benefits relating to health or medical care benefits that are
               available under the Company's policies to you following
               termination of employment.

         4.    The severance benefits provided under the Agreement and this
               Supplemental Agreement will be reduced by any severance benefits
               to which you are entitled under the Company's Severance Benefits
               policy for terminated employees, or any other agreement between
               you and the Company for severance benefits.  Except as provided
               in the immediately preceding sentence, all of your rights and
               benefits, including those under the Agreement and this Letter
               Agreement, shall remain in full





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Mr. John H. Morrow
November 7, 1994
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               force and effect.  It is expressly agreed that payments or
               benefits to you under the Company's SERP or under any agreement
               with you relating to the Company's SERP or any other retirement
               or pension arrangement shall not be offset against or reduce in
               any way any payments or benefits to which you are entitled under
               the Agreement or under this Supplemental Agreement.

         5.    Section 5 of the Agreement is hereby replaced with the following:

               Non-Competition.  During your employment, you agree that you
               will not directly or indirectly compete with the Company, or
               engage in, or act as an officer, director, employee, or agent of
               any person or entity that is engaged in, any business in which
               the Company is engaged, without the written approval of the CEO.
               The foregoing shall not prohibit you from investing in any
               securities of a corporation whose securities, or any of them,
               are listed on a national securities exchange or traded in the
               over-the-counter market so long as you shall own less than 3% of
               the outstanding voting stock of such corporation.  If you are
               entitled to receive payments under Section 3.1(a), then, as to
               any business in which the Company is engaged as of the
               Employment Termination Date, you shall continue to be bound by
               the provisions of this Section 5 during the applicable Continued
               Payment Period.  If you violate the provisions of this Section
               5, then, in addition to any other rights at law or in equity,
               the Company shall be entitled to discontinue any payments
               otherwise due to you hereunder.

         6.    (a)    Anything in the Agreement or this Supplemental Agreement
               to the contrary notwithstanding, in the event it shall be
               determined that any payment or distribution by the Company to or
               for the benefit of Employee (whether paid or payable or
               distributed or distributable pursuant to the terms of this
               Agreement or otherwise) (a "Payment") would be nondeductible by
               the Company for Federal income tax purposes because of Section
               280G of the Code, then the aggregate present value of amounts
               payable or distributable as severance benefits hereunder shall
               be reduced to the Reduced Amount.  The "Reduced Amount" shall be
               an amount expressed in present value which maximizes the
               aggregate present value of such severance benefits without
               causing any Payment to be nondeductible by the Company because
               of Section 280G of the Code.  Anything to the contrary
               notwithstanding, if the Reduced Amount is zero and it is
               determined further that any Payment which is not part of the
               severance benefits payable hereunder would nevertheless be
               nondeductible by the Company for Federal income tax purposes
               because of Section 280G of the Code, then the aggregate present
               value of Payments which are not severance benefits under this
               Agreement shall also be reduced (but not below zero) to an
               amount expressed in present value which maximizes the aggregate
               present value of Payments without causing any payment to be
               nondeductible by the Company because of Section 280G of the
               Code.  For





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Mr. John H. Morrow
November 7, 1994
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               purposes of this paragraph 6, present value shall be determined
               in accordance with Section 280G(d)(4) of the Code.

               (b)    All determinations required to be made under this
               paragraph 6 shall be made by an accounting firm jointly selected
               by you and the Company (the "Accounting Firm") and paid by the
               Company, and which may be the Company's independent auditors.
               The Accounting Firm shall provide detailed supporting
               calculations both to the Company and Employee within 15 business
               days of the Date of Termination or such earlier time as is
               requested by the Company and an opinion to Employee that he or
               she has substantial authority not to report any excise tax on
               his Federal income tax return with respect to any Payments.  Any
               such determination by the Accounting Firm shall be binding upon
               the Company and Employee.  Employee shall determine which and
               how much of the Payments, shall be eliminated or reduced
               consistent with the requirements of this paragraph 6, provided
               that, if Employee does not make such determination within ten
               business days of the receipt of the calculations made by the
               Accounting Firm, the Company shall elect which and how much of
               the Payments shall be eliminated or reduced consistent with the
               requirements of this paragraph 6 and shall notify Employee
               promptly of such election; and provided further that any
               Payments which do not constitute gross income to Employee shall
               not be reduced or eliminated unless all other Payments have
               first been eliminated.  Within five business days thereafter,
               the Company shall pay to or distribute to or for the benefit of
               Employee such amounts as are then due to Employee under this
               Agreement.

               (c)    As a result of the uncertainty in the application of
               Section 280G of the Code at the time of the initial
               determination by the Accounting Firm hereunder, it is possible
               that Payments will have been made by the Company which should
               not have been made ("Overpayment") or that Payments will not
               have been made by the Company which could have been made
               ("Underpayment"), in each case, consistent with the calculations
               required to be made hereunder.  In the event that the Accounting
               Firm, based upon the assertion of a deficiency by the Internal
               Revenue Service against Employee or the Company which the
               Accounting Firm believes has a high probability of success,
               determines that an Overpayment has been made, any such
               Overpayment paid or distributed by the Company to or for the
               benefit of Employee shall be treated for all purposes as a loan
               ab initio to Employee which Employee shall repay to the Company
               together with interest at the applicable federal rate provided
               for in Section 7872(f)(2) of the Code; provided, however, that
               no such loan shall be deemed to have been made and no amount
               shall be payable to the Company if and to the extent such deemed
               loan and payment would not either reduce the amount on which
               Employee is subject to tax under Section 1 and Section 4999 of
               the Code or generate a refund of such taxes.  In the event that
               the Accounting Firm, based upon controlling precedent or other
               substantial authority, determines that an Underpayment has
               occurred, any such Underpayment shall be promptly paid by the
               Company to or for the benefit of Employee together with interest
               at 120% of the applicable federal rate provided for in Section
               7872(f)(2) of the Code, compounded semiannually.





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Mr. John H. Morrow
November 7, 1994
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         7.    Notwithstanding anything in the Agreement or this Supplemental
Agreement to the contrary, if after giving effect to the provisions of Section
6 of this Supplemental Agreement any portion of any payments to you by the
Company under the Agreement, this Supplemental Agreement and any other present
or future plan or program of the Company or other present or future agreement
between you and the Company would not be deductible by the Company for Federal
income tax purposes by reason of application of Section 162(m) of the Code,
then payment of that portion to you shall be deferred until the earliest date
upon which payment thereof can be made to you without being non-deductible
pursuant to Section 162(m) of the Code.  In the event of such a deferral, the
Company shall pay interest to you on the amount deferred at 120% of the
applicable federal rate provided for in Section 7872(f)(2) of the Code,
compounded semi-annually.

         8.    Miscellaneous.

         8.1.  No Assignment.  No benefit hereunder shall be subject to
anticipation, alienation, sale, transfer, assignment, pledge, encumbrances or
charge, and any attempt to do so shall be void.

         8.2   Notices.  All notices hereunder shall be in writing, and shall
be delivered in person, by facsimile or by certified mail-return receipt
requested.  Notices shall be delivered as follows:

                            If to the Company:

                            Chief Executive Officer
                            Puritan-Bennett Corporation
                            9401 Indian Creek Parkway
                            Overland Park, Kansas 66225

                            If to the Employee:

                            Mr. John H. Morrow
                            10231 Catalina
                            Overland Park, Kansas 66207

Either party may change its address for notice by giving notice to the other
party of a new address in accordance with the foregoing provisions.

         8.3   Governing Law.  This Agreement shall be governed by the laws of
the State of Kansas.

         8.4   Disputes.  In the event of any dispute between the Company and
Employee arising out of this Agreement, the Company's then current Alternative
Dispute Resolution Procedure will be followed (a copy of the current procedure
is attached hereto) and the prevailing party shall be entitled to recover its
reasonable attorneys' fees and expenses incurred in connection with the
enforcement of its rights hereunder.





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Mr. John H. Morrow
November 7, 1994
Page 6

         8.5   Severability.  If any term, provision, covenant or restriction
of this Agreement is held by a court of competent jurisdiction or other
authority to be invalid, void or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in full
force and effect and shall in no way be affected, impaired or invalidated.

         8.6   Descriptive Headings.  Descriptive headings of the several
paragraphs of this Agreement are inserted for convenience only and shall not
control or affect the meaning or construction of any of the provisions hereof.

         Please acknowledge your agreement to the foregoing Letter Agreement by
signing the enclosed counterpart of this letter and returning it to the
Company.

                                        Very truly yours,

                                        PURITAN-BENNETT CORPORATION



                                        By: /s/ Lee Robbins
                                            ------------------------------
                                            Vice President


Agreed to and accepted:


/s/ John H. Morrow
- -------------------------                
JOHN H. MORROW