While the P72LA-1 is rated for "All Range" legacy refrigerants

including drywall clips

preventing the premature wear or structural failures associated with using non-standardized aftermarket fittings

This 1/20 HP motor operates on a standard 115V power supply

Slant Fin 412-706-040 Vent Damper R-410A While the P72LA-1 is ratedThe Slant Fin 412 706 040 Vent Damper is a 6 inch automatic vent damper designed to optimize the efficiency of residential gas fired boilers. As a critical safety and efficiency component, this motorized flue damper prevents thermal siphoning by sealing the vent pipe during the burner's off cycle, retaining heat within the heat exchanger. This unit is specifically engineered for Slant Fin boiler models like the Sentry (S series), Sentinel (SE series),