Features galvanized steel with single blade damper, which closes off tightly against gasket for minimal leakage
Designated as power closed or spring return open damper for use with Honeywell zoning systems
Can be field-converted when used as an independent zone or for fresh air intake
Rated to operate up to 1 in WC
Available in 5 to 10 in, 12, 14, 16 and 18 in Dia
Adjustable close position range stops
Male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct
Motor or actuators mounting - side or top
Fail-safe, normally open operation
Simple, easy-to wire, two wire installation with a third wire option M4 for LED open only light
30 sec power closed/10 sec spring return