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Special Offers
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COLLARS - PRESS ON (DAMPER)
Manufactured with an integral one-inch flange and peel and stick gasket, our press-on collar installs easily without the need of external sealing. SPECIAL CHARACTERISTICS: GSI Collars are designed and tested to surpass SMACNA Class 3 Leakage...Regular price $0.00 -
COLLARS - PRESS ON (NO DAMPER)
Manufactured with an integral one-inch flange and peel and stick gasket, our press-on collar installs easily without the need of external sealing. SPECIAL CHARACTERISTICS: GSI Collars are designed and tested to surpass SMACNA Class 3 Leakage...Regular price $0.00 -
COLLARS - TABBED (NO DAMPER)
Our most economical collar is designed with a stop bead and easy-bend tabs, the collar is installed into the duct and secured by bending the tabs. SPECIAL CHARACTERISTICS: GSI Collars are designed and tested to surpass...Regular price $0.00 -
Conicals - Press On (Damper)
Manufactured with an integral one-inch flange and peel-and-stick gasket, our press-on conical duct fitting installs easily without the need of external sealing. SPECIAL CHARACTERISTICS: GSI Conicals are designed and tested to surpass SMACNA Class 3 Leakage...Regular price $0.00 -
Conicals - Press On (No Damper)
Manufactured with an integral one-inch flange and peel and stick gasket, our press-on conical duct fitting installs easily without the need of external sealing. SPECIAL CHARACTERISTICS: GSI Conicals are designed and tested to surpass SMACNA Class...Regular price $0.00 -
CONICALS - SPIN IN ( DAMPER)
Designed to install without the need for fasteners, the flangeless factory-spun groove is installed into the duct, locking the conical duct fitting in place. SPECIAL CHARACTERISTICS: GSI Conicals are designed and tested to surpass SMACNA Class...Regular price $0.00
