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About This Product
The RRD is a round damper that is easily inserted into rigid round ducts for retrofit zoning in forced air heating and cooling systems. The damper is used with Honeywell HZ221, HZ311, HZ322, HZ432 and similar zone control systems. The power open, power closed actuator draws 2.5 VA allowing multiple dampers per zone, but delivers high torque for reliable operation.
Easy slide-in installation
2.5 VA allows for many dampers on one zone
Quiet, long life motor automatically shuts itself off in full open and closed positions
Gaskets around blade and under motor housing for low internal leakage and very low external leakage
Range stops with easy adjustment from top of motor
Easy to see and reliable mechanical blade position indicator
Easy to hook up with conventional thermostat wire
Simple manual blade positioning with push button gear release
