Honeywell 16 in. Round Automatic Damper

Automatic Round Damper power-close, spring-open models ensure low leakage while controlling circulating air in heating, cooling and ventilation systems. Simple, easy-to-wire, two-wire installation with a third wire option M4 for LED open only light. Male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct.|Features galvanized steel with single-blade damper, which closes off tightly against gasket for minimal leakage|Designated as power closed/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|Quick connect motor