Exhibit 3.5.1

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      MICHIGAN DEPARTMENT OF COMMERCE - CORPORATION AND SECURITIES BUREAU
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(FOR BUREAU USE ONLY)           FILED                          DATE RESERVED
                                                                   DEC 7 1984
                              DEC 7 1984                    --------------------

                            ADMINISTRATION                  --------------------
                       MICHIGAN DEPARTMENT OF COMMERCE
                       CORPORATION & SECURITIES BUREAU     

EFFECTIVE DATE:
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   CORPORATION IDENTIFICATION NUMBER 346-257                
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                           ARTICLES OF INCORPORATION
                    FOR USE BY DOMESTIC PROFIT CORPORATIONS

        (Please read instructions on last page before completing form)

     Pursuant to the provisions of Act 284, Public Acts of 1972, as amended, the
undersigned corporation executes the following Articles:

ARTICLE 1
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The name of the corporation is:

               ULTRA AIR PRODUCTS, INC.
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ARTICLE II
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The purpose or purposes for which the corporation is organized is to engage in 
any activity within the purposes for which corporations may be organized under 
the Business Corporation Act of Michigan.



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ARTICLE III
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The total authorized capital stock is:

   Common Shares     50,000                       Par Value Per Share $ 1.00
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1.
   Preferred Shares  ____________________________ Par Value Per Share $ ________

and/or shares without par value as follows:

   Common Shares     ____________________________ Stated Value Per Share $ _____

2.
   Preferred Shares  ____________________________ Stated Value Per Share $ _____

3. A statement of all or any of the relative rights, preferences and limitations
   of the shares of each class is as follows:

     All stock to be issued under Section 1244 of the Internal Revenues Codes 
     of 1954 as amended.

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ARTICLE IV
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1. The address of the registered office is:

   16191 Groesbeck Highway             Roseville   Michigan  48066
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(Street Address)                         (City)              (Zip Code)

2. The mailing address of the registered office if different than above:

________________________________________________   Michigan  _______________
(P.O. Box)                              (City)              (Zip Code)

3. The name of the resident agent at the registered office is: Maroy A. Melin
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ARTICLE V
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The name(s) and address(es) of the incorporator(s) is (are) as follows:
NAME                                       RESIDENCE OR BUSINESS ADDRESS

 Robert L. McKay    16191 Groesbeck Highway, Roseville, Mi. 48066
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 James Muller       16191 Groesbeck Highway, Roseville, Mi. 48066
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 Larry C. Curtis    16191 Groesbeck Highway, Roseville, Mi. 48066
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 Maroy A. Melin     16191 Groesbeck Highway, Roseville, Mi. 48066
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________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

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ARTICLE VI (OPTIONAL DELETE IF NOT APPLICABLE)
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When a compromise or arrangement or a plan of reorganization of this corporation
is proposed between this corporation and its creditors or any class of them or
between this corporation and its shareholders or any class of them, a court of
equity jurisdiction within the state, on application of this corporation or of a
creditor or shareholder thereof, or on application of a receiver appointed for
the corporation, may order a meeting of the creditors or class of creditors or
of the shareholders or class of shareholders to be affected by the proposed
compromise or arrangement or reorganization, to be summoned in such manner as
the court directs. If a majority in number representing 3/4 in value of the
creditors or class of creditors or of the shareholders or class of shareholders
to be affected by the proposed compromise or arrangement or a reorganization,
agree to a compromise or arrangement or a reorganization of this corporation as
a consequence of the compromise or arrangement, the compromise or arrangement,
and the reorganization, if sanctioned by the court to which the application has
been made, shall be binding on all the creditors or class of creditors, or on
all the shareholders or class of shareholders and also on this corporation.
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ARTICLE VII (OPTIONAL DELETE IF NOT APPLICABLE)
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Any action required or permitted by the Act to be taken at an annual or special 
meeting of shareholders may be taken without a meeting, without prior notice and
without a vote, if a consent in writing, setting forth the action so taken, is 
signed by the holders of outstanding stock having not less than the minimum 
number of votes that would be necessary to authorize or take the action at a 
meeting at which all shares entitled to vote thereon were present and voted.

Prompt notice of the taking of the corporate action without a meeting by less 
than unanimous written consent shall be given to shareholders who have not 
consented in writing.
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Use space below for additional Articles or for continuation of previous 
Articles. Please identify any Article being continued or added. Attach 
additional pages if needed.















I (We), the incorporator(s) sign my (our) name(s) this 6th day of December 1984.



    /s/ Robert L. McKay
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  Robert L. McKay

    /s/ James Muller
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  James Muller

    /s/ Larry C. Curtis
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  Larry C. Curtis

    /s/ Maroy A. Melin
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  Maroy A. Melin

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             MICHIGAN DEPARTMENT OF CONSUMER AND INDUSTRY SERVICES
              CORPORATION, SECURITIES AND LAND DEVELOPMENT BUREAU
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Date Received                                      (FOR BUREAU USE ONLY)


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Name     Sally A. Hamby
         Miller, Canfield, Paddock and Stone, PLC
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Address  P.O. Box 2014
         1400 North Woodward Ave., Suite 100
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City                      State                Zip Code             EFFECTIVE
         Bloomfield  Hills        Michigan    48303-2014            DATE:
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Document will be returned to the name and address you enter above


           CERTIFICATE OF AMENDMENT TO THE ARTICLES OF INCORPORATION
             For use by Domestic Profit and Nonprofit Corporations
          (Please read information and instructions on the last page)



     Pursuant to the provisions of Act 284, Public Acts of 1972 (profit
  corporations), or Act 162, Public Acts of 1982 (nonprofit corporations), the
  undersigned corporation executes the following Certificate:

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  1.  The present name of the corporation is:  ULTRA AIR PRODUCTS, INC.

  2.  The identification number assigned by the Bureau is:  346-257

  3.  The location of the registered office is:

  3080 E. Outer Drive, Suite 10, Detroit           , Michigan   48234
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    (Street Address)             (City)                         (Zip Code)

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  4.  Article III of the Articles of Incorporation is hereby amended to read as 
      follows:

  The total authorized shares is 50,000 shares of common stock, consisting of
  35,000 voting common shares $1.00 par value to be designated as Class A and
  15,000 nonvoting common shares $1.00 par value to be designated as Class B.

  The corporation has two classes of common stock. Each class of shares shall be
  identical in all respects, except that the nonvoting shares, designated as
  Class B, shall carry no right to vote for the election of directors of the
  Corporation, and no right to vote on any matter presented to the shareholders
  for their vote or approval except only as the laws of this state require that
  voting rights be granted to such nonvoting shares.
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5.   (For amendments adopted by unanimous consent of incorporators before the
     first meeting of the board of directors or trustees.)

     The foregoing amendment to the Articles of Incorporation was duly adopted 
     on the ____ day of _______________, 19__, in accordance with the provisions
     of the Act by the unanimous consent of the incorporator(s) before the first
     meeting of the Board of Directors or Trustees.


               Signed this ____ day of _______________, 19__



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                 (Signature)                            (Signature)


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             (Type or Print Name)                   (Type of Print Name)


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                 (Signature)                            (Signature)


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             (Type or Print Name)                   (Type of Print Name)

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6.   (For profit corporations, and for nonprofit corporations whose articles
     state the corporation is organized on a stock or on a membership basis.)

     The foregoing amendment to the Articles of Incorporation was duly adopted
     on the 30th day of March, 1998 by the shareholders if a profit corporation,
     or by the shareholders or members if a nonprofit corporation (check one of
     the following)

     [_]  at a meeting. The necessary votes were cast in favor of the amendment.

     [_]  by written consent of the shareholders or members having not less than
          the minimum number of votes required by statute in accordance with
          Section 407(1) and (2) of the Act if a nonprofit corporation, or
          Section 407(1) of the Act if a profit corporation. Written notice to
          shareholders or members who have not consented in writing has been
          given. (Note: Written consent by less than all of the shareholders or
          members is permitted only if such provision appears in the Articles of
          Incorporation.)

     [X]  by written consent of all the shareholders or members entitled to vote
          in accordance with Section 407(3) of the Act if a nonprofit
          corporation, or Section 407(2) of the Act if a profit corporation.


               Signed this 30th day of March, 1998


               By /s/ Robert McKay
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                             (Signature of President, Vice-President,
                                 Chairperson or Vice-Chairperson)

                     Robert McKay                              President
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                 (Type or Print Name)                    (Type or Print Title)

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7.   (For a nonprofit corporation whose articles state the corporation is
     organized on a directorship basis.)

     The foregoing amendment to the Articles of Incorporation was duly adopted 
     on the ____ day of _______________, 19__, by the directors of a nonprofit
     corporation whose articles of incorporation state it is organized on a 
     directorship basis (check one of the following)

     [_]  at a meeting. The necessary votes were cast in favor of the amendment.

     [_]  by written consent of all directors pursuant to Section 525 of the 
          Act.


               Signed this ____ day of _______________, 19__


               By
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                             (Signature of President, Vice-President,
                                 Chairperson or Vice-Chairperson)


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                 (Type or Print Name)                    (Type or Print Title)

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