you must replace the valve and seat as a matched set

allowing you to mount the hardware either vertically or horizontally to match existing wall footprints

while often referred to as an 11x11 wheel

this model features five ports configured specifically for three holding and one pair switching operations

and various A

Resideo ARD5TZ Damper Els PW 29614 you must replace the valveSecure precise airflow control with the Resideo ARD5TZ, an industry standard 5 inch automatic round damper designed for seamless integration into modern 24Vac zoning systems. This two position damper is engineered for high performance residential and light commercial HVAC applications, serving as the direct professional replacement for the legacy CRDS05 model. Built with heavy duty galvanized steel and a single blade configuration, the ARD5TZ features