Dampers SPRD – Round Static Pressure Regulating ZONEFIRST
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.
Sizes: 8″, 9″, 10″, 12″, 14″, 16″, 18″, 20″
Order as: SPRDdd