Honeywell EARD8TZ TrueZONE 8in Round Fresh Air Damper

EARD8TZ HONEYWELL TRUEZONE 8" FRESH AIR DAMPER The EARD is a round damper with a 24 Vac powered-open/spring-closed motor. It is used for fresh air intake for ventilation or for combustion makeup air.  Features: Adjustable damper position range stops. Single-blade damper. Shipped as power open/spring return closed damper. Galvanized steel. Quiet operation. Can be field-converted to power closed/spring return open damper. Blade closes off tightly against gasket for minimal leakage. Male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct. Side or Top Motor/Actuator Mounting