ZoneFirst SPRD-12X10 Damper Els PW 17895 This hardware is built to

This hardware is built to withstand the humid

A belt-type heater provides uniform external heating to the lower compressor housing

standard T100 timers require the 156T1978A series

providing overhead for high-demand compressor starts

a universal or dedicated conventional model should be selected

ZoneFirst SPRD-12X10 Damper Els PW 17895 This hardware is built toEstablishing proper bypass airflow is essential for any multi zone residential or light commercial system, and the ZoneFirst SPRD 12X10 provides a reliable, barometric solution for managing static pressure. This 12" wide by 10" high barometric relief damper is engineered to automatically divert excess air back to the return air plenum when zone dampers close, preventing high velocity noise and maintaining consistent CFM delivery across active zones.