HONEYWELL RRD6 6 inch Retrofit Round Damper. The RRD is a round damper that is easily inserted into rigid round ducts for retrofit zoning in forced air heating and cooling systems. It is available in four sizes for use in 5 in., 6 in., 7 in., and 8 in. ducts. • The damper is used with Honeywell Emm-3, Emm-3u, Tz-4, W8835 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.

Features

• Easy slide-in installation

• 2.5 VA allows for many dampers on one zone

• Available in 4 sizes to fit most rigid round branch ducts

• 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