ZoneFirst RDP-12 Round Damper 323055-751 This mechanical line voltage thermostat

This mechanical line voltage thermostat is a direct solution for technicians requiring a robust

The 31-degree pitch is optimized for high-demand condenser coils to prevent pressure spikes

Reliable Gas Regulation: Maintains consistent manifold pressure to prevent soot buildup and ensure efficient burner operation

Versatile SPDT Logic: Enables control of multiple system components through a single 24V trigger

a standard 2-position spring return model should be used to ensure proper signal response

ZoneFirst RDP-12 Round Damper 323055-751 This mechanical line voltage thermostatThe ZoneFirst RDP 12 is a professional grade 12 inch round damper engineered for precision airflow management in residential and light commercial HVAC zoning systems. This unit features the high torque MP12M modular motor, which utilizes a 12Vdc drive to provide reliable power open power closed operation. Constructed from heavy duty galvanized steel, the RDP 12 ensures structural integrity under high static pressure while the elliptical blade design