Exhibit 10.3.1(12)

                               SECOND AMENDMENT TO
                      AMENDED AND RESTATED CREDIT AGREEMENT
                            AND CONSENT OF GUARANTORS


                  This SECOND AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT
AND CONSENT OF GUARANTORS (this "Amendment") is dated as of September 30, 2001
and entered into by and among MOBILE MINI, INC., a Delaware corporation
("Borrower"), the banks and other financial institutions signatory hereto that
are parties as Lenders to the Credit Agreement referred to below (the
"Lenders"), and BT COMMERCIAL CORPORATION, as agent (in such capacity, the
"Agent") for the Lenders and the Issuing Bank (as defined in the Credit
Agreement referred to below).

                                    RECITALS

                  Whereas, the Borrower, the Lenders, and the Agent have entered
into that certain Amended and Restated Credit Agreement dated as of December 27,
1999, as amended by that certain First Amendment to Amended and Restated Credit
Agreement and Consent of Guarantors dated as of July 25, 2000 (the "Credit
Agreement"; capitalized terms used in this Amendment without definition shall
have the meanings given such terms in the Credit Agreement);

                  Whereas, the Borrower desires to form wholly-owned
Subsidiaries to conduct business in certain jurisdictions and to transfer assets
in such jurisdictions to such Subsidiaries and has requested that such
Subsidiaries be additional borrowers, jointly and severally with the Borrower,
under the Credit Agreement;

                  Whereas, the Borrower has also requested certain amendments to
the Credit Agreement; and

                  Whereas, the Lenders and the Agent are willing to agree to the
amendments requested by the Borrower, on the terms and conditions set forth in
this Amendment;

                  NOW THEREFORE, in consideration of the premises and the mutual
agreements set forth herein, the Borrower, the Lenders, and the Agent agree as
follows:

                  1. AMENDMENTS TO CREDIT AGREEMENT. Subject to the conditions
and upon the terms set forth in this Amendment and in reliance on the
representations and warranties of the Borrower set forth in this Amendment, the
Credit Agreement is hereby amended as follows:

                           1.1 AMENDMENTS TO DEFINITIONS. (a) The following
definitions in Section 1.1 of the Credit Agreement are amended as set forth
herein:

                           (i) Clause (c) is added to "Change of Control" as
         follows:

                           "or (c) any Subsidiary Borrower ceases to be a
                  wholly-owned Subsidiary of the Borrower."

                           (ii) The definition of "Collateral Documents" is
         amended to add "any Joinder Agreement, any Subsidiary Borrower Security
         Agreement," before "Mortgages."

                           (iii) Each of the definitions of Eligible Accounts
         Receivable, Eligible Container Fleet Inventory, Eligible Container
         Inventory Held for Sale, Eligible Goods Inventory, Eligible Inventory,
         Eligible Other Raw Materials Component Inventory, Eligible Primary Raw
         Materials Inventory, Eligible Raw Materials Inventory, Eligible Trailer
         Fleet Inventory and Eligible Work-in-Process Container Inventory is
         amended to add "and the Subsidiary Borrowers" after "the Borrower"
         every place that term appears.

                           (iv) The definition of "Obligations" is amended to
         add "and the Subsidiary Borrowers" after "the Borrower".

                           (v) The definition of "Revolving Note" is amended to
         add "or a Subsidiary Borrower" after "the Borrower".

                           (vi) The definition of "Subsidiary" is amended to add
         at the end of such definition "or a partnership of which such Person is
         a general partner."

                           (b) The following definitions are added to Section
1.1 of the Credit Agreement in proper alphabetical order:

                           Borrower Guaranty means the Guaranty and Contribution
         Agreement executed by each of the Borrower and each Subsidiary
         Borrower.

                           Joinder Agreement means, as to each Subsidiary
         Borrower, an agreement, substantially in the form attached to the
         Second Amendment, pursuant to which such Subsidiary Borrower becomes a
         party to this Credit Agreement, the Subsidiary Borrower Security
         Agreement, the Borrower Guaranty and the other Credit Documents to
         which the Borrower is a party, and entitled to borrow Revolving Loans.

                           Second Amendment means the Second Amendment to
         Amended and Restated Credit Agreement and Consent of Guarantors dated
         as of September 30, 2001 among the Borrower, the Lenders and the Agent.

                           Subsidiary Borrower means a wholly-owned Subsidiary
         of the Borrower designated by the Borrower to become a Subsidiary
         Borrower hereunder in accordance with Section 8.19 of this Credit
         Agreement.


                                      -2-

                           Subsidiary Borrower Security Agreement means a
         security agreement executed by a Subsidiary Borrower in favor of the
         Agent.

                           1.2 AMENDMENT TO SECTION 2.2(a). Section 2.2(a) of
the Credit Agreement is deleted in its entirety and replaced with the following:

                           "(a) Subject to the terms and conditions set forth in
         this Credit Agreement, on and after the Closing Date and to and
         excluding the Expiration Date, each Lender severally agrees to make
         loans and advances to the Borrower and the Subsidiary Borrowers
         ("Revolving Loans") in an aggregate amount not to exceed at any time
         its Proportionate Share of the lesser of (x) the total Revolving Credit
         Commitments (which shall not exceed $160,000,000) or the Borrowing
         Base, minus in each case the then outstanding Letter of Credit
         Obligations. The Borrower and the Subsidiary Borrowers shall be jointly
         and severally liable for the Revolving Loans."

                           1.3 NEW SECTION 2.8. Section 2.8 is added to the
Credit Agreement to read as follows:

                           "2.8 JOINT AND SEVERAL LIABILITY; BORROWING AGENCY
               PROVISIONS. At the request of, and solely as an accommodation to,
               the Borrower, the Lenders have agreed to make the Revolving Loans
               to, and to issue Letters of Credit for, the Borrower and the
               Subsidiary Borrowers on a joint and several basis as
               co-borrowers. Each of the Borrower and the Subsidiary Borrowers
               shall, as of the effective date of the Second Amendment, be
               jointly and severally liable for all Obligations other than the
               Obligations of the Borrower with respect to the Term Loans and
               the Term Notes. In order to facilitate the co-borrowing
               arrangement, each Subsidiary Borrower hereby irrevocably
               designates the Borrower to be its agent and attorney-in-fact for
               purposes of the Credit Documents, and each of them hereby
               irrevocably authorizes such agent in such capacity to take such
               actions on its behalf and to exercise such powers under this
               Credit Agreement and the other Credit Documents on its behalf as
               may otherwise be exercised by such Subsidiary Borrower, together
               with such powers as are incidental thereto, including without
               limitation to borrow Revolving Loans, to execute and deliver
               Notices of Borrowing, Notices of Conversion, Notices of
               Continuation, requests for Letters of Credit, Borrowing Base
               Certificates and such other documents, instruments and
               certificates required by the Credit Documents in connection with
               any borrowing or repayment of the Revolving Loans, to borrow,
               repay, reborrow, convert and continue Revolving Loans and to
               receive proceeds of Revolving Loans and to give all other notices
               and consents hereunder. Each Subsidiary Borrower further
               irrevocably authorizes the Agent to act on all such documents,
               instruments and certificates delivered by such agent and
               attorney-in-fact, and to pay over and credit the proceeds of any
               Revolving Loans so requested to the Borrower or at its direction.
               The Borrower hereby accepts the appointment to act as agent and
               attorney in fact for the Subsidiary Borrowers. The Agent and each
               Lender shall be entitled to rely absolutely on the appointment
               and authorization of the Borrower to act on behalf of the
               Subsidiary Borrowers with respect to all matters


                                      -3-

                  relating to this Agreement and the other Credit Documents,
                  whether or not any provision of this Agreement or any other
                  Credit Documents specifically provides that action may or
                  shall be taken by the Borrower on behalf of the Subsidiary
                  Borrowers. Each Subsidiary Borrower agrees that each notice,
                  election, representation and warranty, covenant, agreement and
                  undertaking made on its behalf by the Borrower shall be deemed
                  for all purposes to have been made by such Subsidiary Borrower
                  and shall be binding upon and enforceable against such
                  Subsidiary Borrower to the same extent as if the same had been
                  made directly by such Subsidiary Borrower."

                           1.4 AMENDMENT TO SECTIONS 4.1, 4.2 AND 4.3. Any
change in the interest rate under Sections 4.1 or 4.2 or in the Letter of Credit
Fees under Section 4.4 based upon a change in the Debt Ratio shall be effective
on the first day of the month following the date of receipt by the Agent of the
Financial Statements and Compliance Certificate required by Section 7.1(a) or
(c), as applicable, for the prior fiscal quarter.

                           1.5 AMENDMENT TO SECTION 4.7. A new Section 4.7 (b)
is added to read as follows:

                           "(b) Prepayments from Proceeds of Indebtedness. If
         the Borrower issues Indebtedness permitted by Section 8.9(f), the cash
         proceeds thereof (net of customary fees and expenses incurred in
         connection therewith) shall be applied to repay the outstanding
         Revolving Loans, without reduction of the Commitments."

                           1.6 AMENDMENTS TO SECTIONS 4.9, 4.10 AND 4.11.
Sections 4.10 and 4.11 are amended to require that each Subsidiary Borrower
shall maintain Blocked Accounts and a Concentration Account in accordance with
Section 4.10, as if it were the "Borrower", and that payments received from any
Subsidiary Borrower shall be applied to the Revolving Loans in accordance with
Sections 4.9 and 4.11, as if it were the "Borrower."

                           1.7 AMENDMENT TO SECTION 4.13(b). Section 4.13(b) is
amended to delete the reference to "$2,000,000" and to replace it with
"$1,000,000".

                           1.8 AMENDMENT TO SECTION 4.13(c). Clause (v) of
Section 4.13(c) is amended to delete the reference to "4" and to replace it with
"8".

                           1.9 AMENDMENT TO SECTION 6.1. Clause (i) of Section
6.1 is deleted and replaced with:

         "is a corporation, limited liability company or a partnership, as the
         case may be, duly organized, validly existing and in good standing
         under the laws of the state of its organization".

                           1.10 AMENDMENTS TO SECTION 8.5. Section 8.5 is
amended to add the following at the end of such Section: "for all fiscal
quarters until the fiscal quarter ending


                                       -4-

December 31, 2003, when such requirement shall be reduced to 1.25:1.0 for such
fiscal quarter and all fiscal quarters thereafter."

                           1.11 AMENDMENTS TO SECTIONS 8.7 AND 8.8. Sections 8.7
and 8.8 are deleted in their entirety and replaced with the following:

                           "8.7 Minimum Utilization Rates. The Borrower and the
                  Subsidiary Borrowers shall maintain minimum utilization rates
                  for each fiscal quarter, calculated at the end of each such
                  quarter as the average amount during such quarter, and
                  calculated as:

                                    (a) the number of units of the Eligible
                  Container Fleet Inventory of the Borrower and the Subsidiary
                  Borrowers which is then subject to valid, current rental or
                  lease agreements between the Borrower or a Subsidiary Borrower
                  and the renters or lessees thereof, divided by the aggregate
                  number of units of the Eligible Container Fleet Inventory of
                  the Borrower and the Subsidiary Borrowers, of not less than
                  seventy-seven and one-half percent (77.5%) in the first fiscal
                  quarter of each year and eighty percent (80%) in each other
                  fiscal quarter; and

                                    (b) (i) the number of units of the Eligible
                  Container Fleet Inventory of the Borrower and the Subsidiary
                  Borrowers which is then subject to valid, current rental or
                  lease agreements between the Borrower or a Subsidiary Borrower
                  and the renters or lessees thereof, divided by (ii) sum of (A)
                  the number of units of the Eligible Container Fleet Inventory
                  of the Borrower and the Subsidiary Borrowers, and (B) the
                  number of units of the Eligible Container Inventory Held For
                  Sale of the Borrower and the Subsidiary Borrowers plus the
                  number of units of the Eligible Primary Raw Materials
                  Inventory of the Borrower and the Subsidiary Borrower
                  consisting of unrefurbished ISO units, of not less than
                  seventy-two and one-half percent (72.5%) in the first fiscal
                  quarter in each year and seventy-five percent (75%) in each
                  other fiscal quarter; provided, that for the purposes of
                  calculation of compliance with this Section 8.7(b), the
                  aggregate of the number of units of Eligible Container
                  Inventory Held For Sale plus the number of units of the
                  Eligible Primary Raw Materials Inventory consisting of
                  unrefurbished ISO units, as a percentage of the sum of clauses
                  (A) and (B) above, shall not exceed five percent (5%).

                           8.8 Capital Expenditures. The Borrower and its
                  Subsidiaries shall not make payments for Capital Expenditures
                  (net of sales of Eligible Container Fleet Inventory) in excess
                  of the following amounts per fiscal year; provided, that as
                  long as no Event of Default shall have occurred and be
                  continuing, the Credit Parties may carry forward and add to
                  the next year's limitation amount (but not beyond such next
                  year) the unused portion of the limitation on Capital
                  Expenditures for the prior year, up to a maximum of one
                  hundred percent (100%) of the prior year's limitation amount;
                  and provided, further, that the amount set forth in this
                  Section 8.8 shall be increased by an amount equal to three
                  hundred


                                      -5-

                  percent of the net proceeds received by the Borrower from any
                  sale of equity securities of the Borrower (the "CapEx Equity
                  Increase") subject to the limitations described below. The
                  Borrower and its Subsidiaries shall not make any Capital
                  Expenditures that are not directly related to the business
                  conducted on the Closing Date by the Borrower and its
                  Subsidiaries. Notwithstanding the foregoing, as long as no
                  Event of Default shall have occurred and be continuing (a) for
                  each fiscal year ending December 31, 2001 and December 31,
                  2002, the Credit Parties may carry forward the aggregate CapEx
                  Equity Increase arising from the Borrower's sale of equity
                  securities during the Borrower's fiscal year ending December
                  31, 1999, to the extent such aggregate CapEx Equity Increase
                  does not exceed $111,000,000, by an amount not to exceed the
                  portion of the such CapEx Equity Increase not counted towards
                  the payment of Capital Expenditures during the prior fiscal
                  year (up to a maximum of one hundred percent (100%) of the
                  prior year's limitation amount); and (b) any subsequent CapEx
                  Equity Increase may be carried forward to any subsequent
                  fiscal year.




                                             CAPITAL EXPENDITURES FOR PLANT,
                                             PROPERTY AND EQUIPMENT ONLY (I.E.,
                                             EXCLUDING CONTAINER FLEET INVENTORY
FISCAL YEAR ENDED    CAPITAL EXPENDITURES    HELD FOR SALE)
                                       
    12/31/99              $10,900,000                     $2,600,000
 and thereafter


                           1.12 AMENDMENTS TO SECTION 8.9. Section 8.9 is
amended to (a) delete the reference in subsection (d) to "$1,250,000" and
replace it with "2,500,000" and

                           (b) add the following:

                                    "(e) Indebtedness consisting of loans or
                  advances by the Borrower to a Subsidiary Borrower or by a
                  Subsidiary Borrower to the Borrower or another Subsidiary
                  Borrower; provided that all such loans and advances are
                  evidenced by a promissory note, which is pledged to the Agent;
                  and

                                    (f) Indebtedness of the Borrower in an
                  aggregate principal amount at any time outstanding not to
                  exceed $140,000,000; provided that (i) such Indebtedness is
                  unsecured and shall have such payment and other terms
                  acceptable to the Agent, and shall be subordinated in right to
                  payments on terms acceptable to the Agent, (ii) at the time
                  such Indebtedness is issued, and after giving pro forma effect
                  thereto, no Default or Event of Default shall exist, and (iii)
                  the net cash proceeds shall be applied to repay the
                  Obligations as required by Section 4.7(b)."


                                      -6-

                           1.13 AMENDMENT TO SECTION 8.17. Section 8.17 of the
Credit Agreement is amended to delete the reference to "$200,000" and to replace
it with "$500,000".

                           1.14 AMENDMENT TO SECTION 8.19. Section 8.19 is
deleted in its entirety and replaced by the following:

                           "8.19 No Subsidiaries. The Borrower shall not,
                  directly or indirectly, form or acquire any new Subsidiaries,
                  except (a) in connection with Permitted Acquisitions in
                  compliance with Section 8.21, and (b) if each of the following
                  conditions is met:

                                    (i) each new Subsidiary is a wholly-owned
                  Subsidiary of the Borrower created to conduct business in a
                  specific jurisdiction;

                                    (ii) both before and after giving effect to
                  the creation of such Subsidiary and the transfer of any assets
                  from the Borrower to such Subsidiary, all representations and
                  warranties of the Credit Parties contained in any Credit
                  Document are true and correct (except such revisions as are
                  necessary to reflect the formation of such new Subsidiary), no
                  Default or Event of Default shall have occurred and be
                  continuing, and all Credit Parties shall be solvent (as
                  represented in Section 6.7);

                                    (iii) the Borrower shall have delivered to
                  the Agent written notice at least fifteen (15) Business Days
                  prior to consummation of any transfer of assets to, or
                  acquisition of assets by, such new Subsidiary, describing in
                  reasonable detail the proposed new Subsidiary and its assets;

                                    (iv) any such new Subsidiary shall become a
                  Subsidiary Borrower hereunder, by execution and delivery of a
                  Joinder Agreement, and shall have executed and delivered to
                  the Agent such Collateral Documents and other documents as are
                  necessary (or advisable in the Agent's judgment) under
                  applicable Requirements of Law in order to grant the Agent a
                  perfected first priority security interest and Lien in the
                  assets of, and ownership interests in, such Subsidiary
                  (subject only to Permitted Liens); and the Borrower shall
                  execute and deliver an amendment to the Pledge Agreement in
                  form and substance satisfactory to the Agent, together with
                  stock certificates and promissory notes and other instruments
                  endorsed in blank, to pledge all equity interests in such new
                  Subsidiary;

                                    (v) if required by the Agent, the Agent
                  shall have received opinions of counsel, in form and substance
                  satisfactory to it, as to the due execution, delivery and
                  enforceability of the Credit Documents executed by such new
                  Subsidiary, together with such evidences of solvency,
                  certificates, Certificates of Title, and other documents and
                  instruments reasonably requested by the Agent; and


                                       -7-

                                    (vi) there shall be no more than seven (7)
                  Subsidiary Borrowers under this Agreement."

                           1.15 AMENDMENT TO SECTION 8.20. Section 8.20 is
amended to add at the end of such Section "and liabilities in connection with
operating leases not exceeding $2,500,000 in the aggregate at any time
outstanding."

                           1.16 AMENDMENT TO SECTION 11.7. All notices to be
delivered to the Borrower or any Subsidiary Borrower shall be delivered to:

                           Mobile Mini, Inc.
                           7420 South Kyrene Road
                           Suite 101
                           Tempe, Arizona 85238
                           Attn:  Steven Bunger, Chief Executive Officer and
                                  Larry Trachtenburg, Executive Vice President
                           Facsimile: 480-894-6433

                  2. REPRESENTATIONS AND WARRANTIES OF THE BORROWER. In order to
induce the Lenders and the Agent to enter into this Amendment, the Borrower
represents and warrants to each Lender, the Issuing Bank and the Agent that the
following statements are true, correct and complete:

                           2.1 POWER AND AUTHORITY. Each of the Credit Parties
has all corporate power and authority to enter into this Amendment and, as
applicable, the Consent of Guarantors attached hereto (the "Consent") and the
Credit Documents required to be delivered hereunder, and to carry out the
transactions contemplated by, and to perform its obligations under or in respect
of, the Credit Agreement as amended hereby and such Credit Documents.

                           2.2 CORPORATE ACTION. The execution and delivery of
this Amendment, the Consent and the Credit Documents required to be delivered
hereunder and the performance of the obligations of each Credit Party under or
in respect of the Credit Agreement as amended hereby and such Credit Documents
have been duly authorized by all necessary corporate action on the part of each
of the Credit Parties.

                           2.3 NO CONFLICT OR VIOLATION OR REQUIRED CONSENT OR
APPROVAL. The execution and delivery of this Amendment, the Consent and the
Credit Documents required to be delivered hereunder and the performance of the
obligations of each Credit Party under or in respect of the Credit Agreement as
amended hereby and such Credit Documents do not and will not conflict with or
violate (a) any provision of the governing documents of any Credit Party, (b)
any Requirement of Law, (c) any order, judgment or decree of any court or other
governmental agency binding on any Credit Party or any of its Subsidiaries, or
(d) any indenture, agreement or instrument to which any Credit Party or any of
its Subsidiaries is a party or by which any Credit Party or any of its
Subsidiaries, or any property of any of them, is bound, and do not and will not
require any consent or approval of any Person.


                                      -8-

                           2.4 EXECUTION, DELIVERY AND ENFORCEABILITY. This
Amendment, the Consent and the Credit Documents required to be delivered
hereunder have been duly executed and delivered by each Credit Party which is a
party thereto and are the legal, valid and binding obligations of such Credit
Party, enforceable in accordance with their terms, except as enforceability may
be affected by applicable bankruptcy, insolvency, and similar proceedings
affecting the rights of creditors generally, and general principles of equity.

                           2.5 NO DEFAULT OR EVENT OF DEFAULT. No event has
occurred and is continuing or will result from the execution and delivery of
this Amendment, the Consent and the Credit Documents required to be delivered
hereunder that would constitute a Default or an Event of Default.

                           2.6 NO MATERIAL ADVERSE EFFECT. No event has occurred
that has resulted, or could reasonably be expected to result, in a Material
Adverse Effect.

                           2.7 REPRESENTATIONS AND WARRANTIES. Each of the
representations and warranties contained in the Credit Documents is and will be
true and correct in all material respects on and as of the date hereof and as of
the effective date of this Amendment, except to the extent that such
representations and warranties specifically relate to an earlier date, in which
case they were true, correct and complete in all material respects as of such
earlier date.

                  3. CONDITIONS TO EFFECTIVENESS OF THIS AMENDMENT. This
Amendment shall be effective only if and when signed by, and when counterparts
hereof shall have been delivered to the Agent (by hand delivery, mail or
telecopy) by, the Borrower and Majority Lenders and only if and when each of the
following conditions is satisfied:

                           3.1 CONSENT OF GUARANTORS. Each of the Guarantors
shall have executed and delivered to the Agent the Consent.

                           3.2 OTHER CREDIT DOCUMENTS. The Agent shall have
received the following: (a) a Joinder Agreement, duly executed by each
Subsidiary Borrower, together with all Schedules thereto; (b) a Revolving Note
for each Lender from each Subsidiary Borrower; (c) a Subsidiary Borrower
Security Agreement, duly executed by each Subsidiary Borrower; (d) the Borrower
Guaranty, executed by each of the Borrower and each Subsidiary Borrower; (e)
such financing statements and other Credit Documents as the Agent may require to
perfect all Liens granted by the Credit Documents; (f) opinions of counsel, in
form and substance satisfactory to the Agent; and (g) such other documents (or
amendments to the Credit Documents) as the Agent may reasonably require to
effect the transactions contemplated by this Amendment.

                           3.3 NO DEFAULT OR EVENT OF DEFAULT; ACCURACY OF
REPRESENTATIONS AND WARRANTIES. No Default or Event of Default shall exist and
each of the representations and warranties made by the Credit Parties herein and
in or pursuant to the Credit Documents shall be true and correct in all material
respects as if made on and as of the date on which this Amendment becomes
effective (except that any such representation or warranty that is expressly


                                      -9-

stated as being made only as of a specified earlier date shall be true and
correct as of such earlier date), and the Borrower shall have delivered to the
Agent a certificate confirming such matters.

                           3.4 CORPORATE DOCUMENTS. The Borrower shall have
delivered to the Agent copies of resolutions of each of the Credit Parties
approving and authorizing this Amendment, the Consent and the other Credit
Documents, together with an incumbency certificate for the persons executing
this Amendment, the Consent and the other Credit Documents.

                           3.5 OTHER DOCUMENTS. The Agent shall have received
such documents as the Agent may reasonably request in connection with this
Amendment and the Credit Documents required hereby.

                  4. EFFECT OF AMENDMENT. From and after the date on which this
Amendment becomes effective, all references in the Credit Documents to the
Credit Agreement shall mean the Credit Agreement as amended hereby. Except as
expressly amended hereby or waived herein, the Credit Agreement and the other
Credit Documents, including the Liens granted thereunder, shall remain in full
force and effect, and are hereby ratified and confirmed.

                  5. APPLICABLE LAW. THE VALIDITY, INTERPRETATIONS AND
ENFORCEMENT OF THIS AMENDMENT AND ANY DISPUTE ARISING OUT OF OR IN CONNECTION
WITH THIS AMENDMENT, WHETHER SOUNDING IN CONTRACT, TORT, EQUITY OR OTHERWISE,
SHALL BE GOVERNED BY THE INTERNAL LAWS AND DECISIONS OF THE STATE OF CALIFORNIA.

                  6. COMPLETE AGREEMENT. This Amendment and the Credit Documents
required hereunder set forth the complete agreement of the parties in respect of
any amendment to any of the provisions of any Credit Document or any waiver
thereof.

                  7. CAPTIONS; COUNTERPARTS. The catchlines and captions herein
are intended solely for convenience of reference and shall not be used to
interpret or construe the provisions hereof. This Amendment may be executed by
one or more of the parties to this Amendment on any number of separate
counterparts (including by telecopy), all of which taken together shall
constitute but one and the same instrument.


                  [remainder of page intentionally left blank]


                                      -10-

                  IN WITNESS WHEREOF, the parties hereto have caused this Second
Amendment to Amended and Restated Credit Agreement and Consent of Guarantors to
be duly executed by a duly authorized officer as of the date first above
written.


                               MOBILE MINI, INC.


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               BT COMMERCIAL CORPORATION,
                                 as Agent


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               BANKERS TRUST COMPANY,
                               as a Lender


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               BANK OF AMERICA, N.A.,
                               as a Lender


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               DEUTSCHE FINANCIAL SERVICES
                               CORPORATION, as a Lender


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                                      S-1

                               SUMMIT BUSINESS CAPITAL CORP.,
                               as a Lender


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               BANK ONE, ARIZONA, NA,
                               as a Lender


                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               LA SALLE BUSINESS CREDIT, INC.,
                               as a Lender

                               By:________________________________
                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               FIRST UNION NATIONAL BANK,
                                as a Lender

                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                               BANK LEUMI USA,
                               as a Lender

                               By:________________________________
                                     Name:________________________
                                     Title:_______________________


                                      S-2

                              CONSENT OF GUARANTORS


Each of the undersigned is a Guarantor of the Obligations of the Borrower under
the Credit Agreement and hereby (a) consents to the foregoing Amendment, (b)
acknowledges that notwithstanding the execution and delivery of the foregoing
Amendment and the addition of the Subsidiary Borrowers in accordance with the
terms of the Credit Agreement, as amended by the Amendment (on the date hereof
or in the future), the obligations of each of the undersigned Guarantors are not
impaired or affected and the Guaranties continue in full force and effect, and
(c) ratifies its Guaranty and agrees that such Guaranty shall extend to the
Obligations of all Subsidiary Borrowers, whether now existing or hereafter
incurred.

                  IN WITNESS WHEREOF, each of the undersigned has executed and
delivered this Consent of Guarantors as of the 30th day of September, 2001.

                                 MOBILE MINI I, INC.


                                 By:________________________________
                                       Name:________________________
                                       Title:_______________________

                                 DELIVERY DESIGN SYSTEMS, INC.


                                 By:________________________________
                                       Name:________________________
                                       Title:_______________________