Key Benefits Direct OEM Compatibility: Engineered as the specific replacement for 329789-401

Durable Construction: Features extruded aluminum blades and reinforced internal gears designed to withstand high-static environments up to 1 in

With a maximum working pressure of 150 PSI and a temperature range of 33°F to 140°F

Always verify the specific resistive or inductive derating curves for your DC application

Universal System Compatibility: Direct drop-in replacement for 05-4170-08 across brands like FS Curtis

Resideo RRD7 Damper 321894-709 Key Benefits Direct OEM Compatibility:The Resideo RRD7 Damper is a 7 inch retrofit round damper designed for seamless integration into existing rigid ductwork. Built for zoning system installations, this unit features a three wire floating actuator that provides precise control over airflow. Operating on 24Vac, the power open power closed motor ensures the blade remains in its last position during power loss, preventing total zone failure. The honeywell home RRD7 is engineered with a high