This genuine Totaline replacement part maintains the structural integrity of the furnace’s safety circuit

If your existing manifold uses 3/4" piping

please verify the specific auxiliary requirements of the detector's power board

standard for residential and light commercial split system liquid lines

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

Resideo RRD7 Damper 321894-709 This genuine Totaline replacement partThe 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