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- Acme Manufacturing - 26 Ga & 30 Ga Snaplock Pipe & Elbows, Prefabricated Duct & Fittings
- Ductmate - Rect & Rd. Duct Connector Systems (WDIC & Ductmate), Access Doors, Turn Vane & Rail, Flexible Connector, Duct Sealers & Adhesives, Grease Duct Access Doors, Weld Pins
- Duro- Dyne- Flexible Duct Connector, Damper Hardware, Sheet Metal Screws
- Lukjan Metal - 26 Ga & 30 Ga Snaplock Pipe & Elbows, Prefabricated Duct & Fittings
- Kirk & Blum - Forever Duct (Sealed Round Pipe System) Angle rings, blast gates
- Majestic Steel - Galvanized sheets, coils
- Stamped Fittings- "The Edge" Round Spiral Sealed Duct Products
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