Document:

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                                                                  EXECUTION COPY

                        Diamond Triumph Auto Glass, Inc.
                               220 Division Street
                          Kingston, Pennsylvania 18704

                                                              As of June 1, 2002

Mr. Norman Harris
222 Beach Ridge Drive
Powell, Ohio 43065

         Re:      Stockholders Agreement

Dear Norman:

                  This Letter Agreement confirms the understanding reached
between you, Diamond Triumph Auto Glass, Inc., a Delaware corporation (the
"Company"), Green Equity Investors II, L.P. ("GEI"), Kenneth Levine and Richard
Rutta regarding the applicability of that certain Management Subscription and
Stockholders Agreement (the "Stockholders Agreement"), entered into by and among
you, the Company and GEI as of March 31, 1998, with respect to all Restricted
Shares (as defined in that certain Restricted Stock Agreement entered into
between you and the Company dated as of June 1, 2002 (the "Restricted Stock
Agreement")). Capitalized terms used herein without definition shall have the
meaning set forth in the Stockholders Agreement.

                  1.       On the date hereof, you will be awarded Restricted
Shares pursuant to the terms and conditions set forth in the Restricted Stock
Agreement.

                  2.       You hereby agree, as a condition to receiving the
Restricted Shares, that all Restricted Shares (whether or not vested) shall be
deemed to be "Covered Shares" under the Stockholders Agreement and shall be
subject to the terms and conditions of the Stockholders Agreement (including,
without limitation, the terms and conditions set forth in Sections 3, 4, 5, 6,
7, 8 and 9 thereof) with the same force and effect as if such Restricted Shares
were originally subject thereto; provided, however, that notwithstanding any
provision to the contrary in Section 4 of the Stockholders Agreement, the Call
Closing shall not occur, and the purchase price per share subject to the
Company's "call" option shall not be determined, prior to the expiration of six
months following the date such shares were first transferred to you; and,
provided, further, that notwithstanding any provision to the contrary in Section
7 of the Stockholders Agreement, the "piggyback" registration rights contained
in such Section 7 shall not apply to any Restricted Shares until the first
applicable public offering following the first date on which the Common Stock is
publicly traded on any national securities exchange, or the Nasdaq National
Market System or on the Nasdaq "Small Cap" Issues System; and, provided,
further, that notwithstanding anything in this Letter Agreement or the
Stockholders Agreement to the contrary, no Restricted Shares may be sold,
transferred, assigned, pledged, encumbered or otherwise disposed of by you prior
to the time the Restrictions (as defined in the Restricted Stock Agreement) with
respect to such Restricted Shares have lapsed.

                  3.       In order to effectuate the foregoing, you agree to
execute any additional documents as may be reasonably requested from time to
time by the Company or GEI.

                  Please indicate your acceptance of the terms and provisions of
this Letter Agreement by signing both copies of this Letter Agreement and
returning one copy to me. The other copy is for your files. This Letter
Agreement shall constitute an amendment to the Stockholders Agreement as
described

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in Section 12(a) thereof. This Letter Agreement shall be governed and construed
under the internal laws of the State of New York and may be executed in several
counterparts.

                                   Very truly yours,

                                      /s/ Kenneth Levine
                                   ---------------------------------------------
                                   Kenneth Levine
                                   Co-Chairman, Diamond Triumph Auto Glass, Inc.

Agreed and Accepted:

      /s/ Norman Harris
------------------------------
Norman Harris

Agreed and Accepted:

      /s/ Kenneth Levine
------------------------------
Kenneth Levine

Agreed and Accepted:

      /s/ Richard Rutta
------------------------------
Richard Rutta

Agreed and Accepted:

Green Equity Investors II, L.P.

By:  Grand Avenue Capital Partners, L.P., general partner

By:  Grand Avenue Capital Corporation, its general partner

By:      /s/ Jonathan A. Seiffer
   ---------------------------------------------
   Name:  Jonathan A. Seiffer
   Title: Director

                                       2<PAGE>

                               AMENDMENT AGREEMENT

         AMENDMENT AGREEMENT dated as of October 30, 2002, between Diamond
Triumph Auto Glass, Inc., a Delaware corporation (the "Company"), Green Equity
Investors II, L.P. ("GEI"), Kenneth Levine, Richard Rutta, and Michael A.
Sumsky.

                                  WITNESSETH:

         This Amendment Agreement confirms the understanding reached between
Michael Sumsky, the Company, GEI, Kenneth Levine and Richard Rutta regarding the
applicability of that certain Management Subscription and Stockholders Agreement
(the "Stockholders Agreement"), entered into by and among Michael Sumsky, the
Company and GEI dated as of March 31, 1998, with respect to the sale of the
Shares (as defined in that certain Stock Sale Agreement entered into between
Michael Sumsky and DT Subsidiary Corp. dated as of the date hereof (the "Stock
Sale Agreement")). Capitalized terms used herein without definition shall have
the meaning set forth in the Stockholders Agreement.

         For the mutual agreements herein contained and other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, and
intending to be legally bound hereby, the parties hereto agree as follows:

         1.       The parties to the Stockholders Agreement hereby waive any
non-compliance by Michael A. Sumsky with the terms and provisions of Section
3(a) (Prohibition on Transfer) of the Stockholders Agreement with respect to the
sale of the Shares pursuant to the Stock Sale Agreement. This Amendment
Agreement does not waive any other rights that the parties to the Stockholders
Agreement may have with respect to such agreement and further does not waive any
subsequent breach or default of section 3(a) of the Stockholders Agreement.

         2.       In order to effectuate the foregoing, the parties to the
Stockholders Agreement agree to execute any additional documents as may be
reasonably requested from time to time by the Company or GEI.

         3.       This Amendment Agreement shall constitute a waiver of the
Stockholders Agreement as described in Section 12(b) thereof. This Amendment
Agreement shall be governed and construed under the internal laws of the State
of New York and may be executed in several counterparts.

         4.       This Amendment Agreement may be executed in one or more
counterparts, each shall be deemed to be original, but all of which together
shall constitute one and the same.

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                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment Agreement to be duly executed as of the day and year first above
written.

                             DIAMOND TRIUMPH AUTO GLASS, INC.

                             By:   /s/ Kenneth Levine
                             -------------------------------
                                   Kenneth Levine

                             MICHAEL A. SUMSKY

                             By:   /s/ Michael A. Sumsky
                             -------------------------------
                                   Michael A. Sumsky

                             KENNETH LEVINE

                             By:   /s/ Kenneth Levine
                             -------------------------------
                                   Kenneth Levine

                             RICHARD RUTTA

                             By:   /s/ Richard Rutta
                             -------------------------------
                                   Richard Rutta

                             GREEN EQUITY INVESTORS II, L.P.

                             By: Grand Avenue Capital Partners, L.P., general
                             partner

                             By: Grand Avenue Capital Corporation, its general
                             partner

                             By:    /s/ Jonathan D. Sokoloff
                             --------------------------------
                             Name:  Jonathan D. Sokoloff
                             Title: Director

                                       2<PAGE>

                              STOCK SALE AGREEMENT

                  STOCK SALE AGREEMENT (the "Agreement") dated as of October 30,
2002, between DT Subsidiary Corp., a Delaware corporation (the "Company"), and
Michael A. Sumsky (the "Seller").

                                   WITNESSETH:

                  In consideration of the payment by the Company to the Seller
of $300,000 (the "Consideration") and the other mutual covenants and agreements
herein contained and other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, and intending to be legally bound
hereby, the parties hereto agree as follows:

                  1.       Purchase, Sale and Delivery of the Shares.

                  Subject to the terms and conditions set forth in this
Agreement, (a) the Seller hereby sells to the Company, and the Company hereby
purchases from the Seller, a total of 15,000 shares (the "Shares") of the common
stock, par value $0.01 per share, of Diamond Triumph Auto Glass, Inc., a
Delaware corporation and the parent of the Company, for the Consideration, (b)
the Seller hereby transfers and delivers the Shares to the Company (duly
endorsed for transfer or accompanied by appropriate stock transfer powers duly
executed) and (c) the Company hereby delivers to the Seller the Consideration by
check made payable to the order of the Seller.

                  2.       Representations and Warranties of the Seller.

                  The Seller hereby represents and warrants to the Company that
the Seller has good and marketable title to the Shares, free and clear of all
claims, encumbrances, security interests or liens of any kind or nature
whatsoever. Immediately upon consummation of the sale of the Shares by the
Seller pursuant to this Agreement, the Company will possess good and marketable
title to the Shares, free and clear as aforesaid.

                  3.       Miscellaneous.

                  (a)      All representations and warranties made by the Seller
in this Agreement or pursuant hereto shall survive the execution and delivery of
this Agreement.

                  (b)      This Agreement contains the entire agreement of the
parties hereto with respect to the purchase and sale of the Shares; shall be
binding upon and inure to the benefit of the Company and the Seller, and their
respective successors and assigns; and may not be changed or terminated orally.

                  (c)      This Agreement shall be governed by, construed and
enforced in accordance with the internal laws of the State of New York, without
reference to principles of conflict of laws

                  (d)      This Agreement may be executed in one or more
counterparts, each shall be deemed to be original, but all of which together
shall constitute one and the same.

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                  IN WITNESS WHEREOF, the parties hereto have caused this Stock
Sale Agreement to be duly executed as of the day and year first above written.

                                            DT SUBSIDIARY CORP.

                                            By:   /s/ Kenneth Levine
                                               -----------------------------
                                                  Kenneth Levine

                                            MICHAEL A. SUMSKY

                                            By:   /s/ Michael A. Sumsky
                                               -------------------------------
                                                  Michael A. Sumsky

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