The TrueZONE® Bypass constant pressure regulating damper (CPRD) is a round static pressure relief damper. It is used in forced-air bypass applications to relieve excess static pressure when some of the zone dampers are closed.
resideo Bypass Damper, 14 in Diameter, 24 V, 60 Hz, VA Rating: 8 VA, 1400 cfm, 22 ga Gauge, Steel, Finish: Galvanized, Round Shape, 0 to 165 deg F