ensuring mounting holes and port alignments match exactly

Precise Fitment: Engineered to match the four-bolt valve bracket pattern for the Model 21-27 series

Key Benefits for the Contractor Wrapped construction provides smooth

Utilizing a dual-voltage design

High Voltage Tolerance: Rated for 400v to provide a robust buffer against voltage spikes in residential and commercial applications

Resideo ZD22X16TZ Damper R-407C ensuring mounting holes and portThe Resideo ZD22X16TZ is a professional grade parallel blade zone damper designed for precision airflow control in residential and light commercial forced air systems. Built with a heavy duty extruded aluminum frame and blades, this 22x16 rectangular damper ensures structural integrity and low leakage performance. It utilizes a 24Vac synchronous motor mounted on the 16 inch side, operating in a power closed spring return open configuration to maintain