While this is a single-speed 1

allowing for precise inches of water column (WC) readings during commissioning

System Signal Integrity: Maintains factory-spec electrical resistance to ensure accurate relay chatter prevention and motor starts

It features a broad pressure range of 12" WC to 50 PSI and an adjustable differential of 5 to 35 PSI

System Safety: Restores proper combustion airflow to prevent premature heat exchanger fatigue and safety switch tripping

EWC Controls URD-14 Damper 318518-761 While this is a single-speedFor high performance zone control, the EWC Controls URD 14 Damper delivers professional grade reliability and precision airflow management. Built for contractors who require a robust solution, this 14 inch round motorized damper features an integrated Poron sealing gasket and a double layered blade design, ensuring a tight seal with less than 2% leakage even in systems with higher static pressures. The 24 gauge galvanized steel construction,