ZoneFirst SPRD-12X10 Damper Els PW 17895 leak-proof mechanical connection between the

leak-proof mechanical connection between the gas valve body and its corresponding pipe adapters or actuators

providing flexibility across various system retrofits

protecting the heat exchanger from improper venting or airflow restrictions

Does this unit support auxiliary switch mounting

Common Questions: What causes a limit switch like the R40154B010 to trip repeatedly

ZoneFirst SPRD-12X10 Damper Els PW 17895 leak-proof mechanical connection between theEstablishing 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.