Zonefirst® SPRD 8 Static Pressure Regulating Damper, 8 in, Steel, Galvanized
Zonefirst® Static Pressure Regulating Damper, 8 in Damper, Round, 22 ga, Steel, Galvanized
This barametric by-pass damper is a single blade, counter balanced weighted damper that operates on air pressure in order to control the flow of by-pass air. The SPRD has an adjustable arm and weight to maintain the correct amount of pressure in the duct system.