Ideal-Air Back Draft DampersThese are excellent quality back draft dampers. They are made from heavy-gauge galvanized steel with heavy duty springs. They use both an embossed bead & rubber gasket to help keep ducting securely in place. They prevent back draft air when your fans are off.
Brand: Ideal Air
Weight (lb.): 3
Length (in.): 12.5
Width (in.): 12.3
Height (in.): 5.3
UL Listed: No
UPC: 870883000479
Flange Included: No
Duct Size: 12" Diameter