EXHIBIT 3.5

                            CERTIFICATE OF FORMATION

                                       OF

                     AMERICAN ENTERPRISES MPT HOLDINGS, LLC

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      1. The name of the limited liability company is American Enterprises MPT
Holdings, LLC.

      2. The address of its registered office in the State of Delaware is c/o
Corporation Service Company, 2711 Centerville Rd., Suite 400, City of
Wilmington, County of New Castle, State of Delaware 19808. The name of its
registered agent at such address is Corporation Service Company.

      IN WITNESS THEREOF, the undersigned shall have caused this Certificate of
Formation of American Enterprises MPT Holdings, LLC to be executed this 21st day
of December, 2005.

                                  By: /s/ Patricia J. Turner
                                     -------------------------------------
                                  Name: Patricia J. Turner,
                                  Title: Authorized Person