Zonefirst IOBD-12X6 Damper Els PW 17895 leak-free seal in closed-loop systems

leak-free seal in closed-loop systems using hot water

allowing technicians to switch rotation in the field to match the original fan blade pitch

though their internal switching mechanisms are functionally similar

replacing a different blade count or pitch will alter the motor's amp draw and airflow profile

Zonefirst IOBD-12X6 Damper Els PW 17895 leak-free seal in closed-loop systemsThe Zonefirst IOBD 12X6 is a professional grade 12" H x 6" W Opposed Blade Damper engineered for high performance HVAC zone control applications. Built for technicians who prioritize precision airflow, this unit utilizes an opposed blade configuration to minimize turbulence and provide a more linear flow characteristic than standard parallel blade dampers. The assembly features an internally mounted motor, which protects the 24Vac actuator from