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                                                                     Exhibit 3.7

                          CERTIFICATE OF INCORPORATION

                                       OF

                        DCI/DWC ACQUISITION CORPORATION

         1. The name of the corporation is: DCI/DWC Acquisition Corporation.

         2. The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle. The name of its registered agent at such address is The
Corporation Trust Company.

         3. The purpose of the Corporation is to engage in any lawful act or
activity for which corporations may be organized under the General Corporation
Law of Delaware.

         4. The total number of shares which the Corporation shall have
authority to issue is 1,000 shares of capital stock, and the par value of each
such share is $0.001 per share.

         Cumulative voting as provided for by Section 214 of Title 8 of the
Delaware Code shall not apply to this Corporation.

         Preemptive rights as provided for by Section 102(b)(3) of Title 8 of
the Delaware Code shall not be granted and are hereby expressly denied.

         5. The name and mailing address of each incorporator is:

         NAME         MAILING ADDRESS

A.S. Gardner      Corporation Trust Center
                  1209 Orange Street
                  Wilmington, Delaware 19801

S.A. Clegg        Corporation Trust Center
                  1209 Orange Street
                  Wilmington, Delaware 19801
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C.L. Hughes       Corporation Trust Center
                  1209 Orange Street
                  Wilmington, Delaware  19801

         6. The name and mailing address of each person who is to serve as a
director until the first annual meeting of the stockholders or until a successor
is elected and qualified is:

         NAME         MAILING ADDRESS

Frank J. Amedia    c/o American Architectural Products Corp.
                   755 Boardman-Canfield Road
                   South Bridge Executive Center
                   Building G West
                   Boardman, Ohio 44512

                  The Board of Directors shall have sole authority to determine
the number of Directors serving on the Board, and may increase or decrease the
exact number of Directors from time to time by resolution duly adopted by such
Board. No decrease in the number of Directors shall have the effect of
shortening the term of any incumbent Director.

         7. The Corporation shall have perpetual existence.

         8. The Corporation shall be managed by the Board of Directors, which
shall exercise all powers conferred under the laws of the State of Delaware. The
Board of Directors shall have authority to make, alter or repeal the Bylaws of
the Corporation.

         9. Elections of directors need not be by written ballot unless the
Bylaws of the Corporation shall so provide.

         10. Meetings of stockholders may be held within or without the State of
Delaware, as the Bylaws may provide. The books of the corporation may be kept
(subject to any provision contained in the statutes) outside the State of
Delaware at such place or places as may be designated from time to time by the
Board of Directors or in the Bylaws of the Corporation.


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         11. No director of the Corporation shall be personally liable to the
Corporation or its stockholders for monetary damages for breach of fiduciary
duty as a director; provided, however, that nothing contained herein shall
eliminate or limit the liability of a director of the Corporation to the extent
provided by applicable laws (i) for any breach of the director's duty of loyalty
to the Corporation or its stockholders, (ii) for acts or omissions not in good
faith or which involve intentional misconduct or knowing violation of law, (iii)
for authorizing the payment of a dividend or repurchase of stock, or (iv) for
any transaction from which the director derived an improper personal benefit.
The limitation of liability provided herein shall continue after a director has
ceased to occupy such position as to acts or omissions occurring during such
director's term or terms of office.

         12. The Corporation reserves the right to amend, alter, change or
repeal any provision contained in this Certificate of Incorporation, in the
manner now or hereafter prescribed by statute, and all rights conferred upon
stockholders herein are granted subject to this reservation.

         The undersigned, being each of the incorporators hereinbefore named,
for the purpose of forming a corporation pursuant to the General Corporation Law
of the State of Delaware, do hereby declare and certify that this is our act and
deed and the facts herein stated are true, and accordingly have hereunto set our
hands this 10th day of November, 1997.

                              /s/  A.S. Gardner
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                              /s/  S.A. Clegg
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                              /s/  C.L. Hughes
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                                        INCORPORATORS

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