Companies

• Gatter & Diehl, Inc.

• General Resource Corp.

• Governair Corp.

• Grand Entrance Gates, Ltd.

• Greenheck

• HEMCO corp.

• HEPA Corporation

• HVAC Distributors, Inc.

• Hartzell Fan

• Hastings HVAC, Inc.

• Heat Transfer Systems, Inc.

• Hitch, Inc.

• Hoffman Air & Filtration Systems

• Howden Buffalo

• IDEA Design/Build

• JennFan

• Jonathan Nehmer + Associates, Inc.

• KEES INC.

• Kanaflakt

• King Industries, Inc.

• LL Building Products

• Leading Edge

• Loren Cook Company

• Louisville Dryer Company

• Magic Aire

• Marshall Air Systems, Inc.