Velocity Boiler Works (Crown) 96-033 Vent Damper R-448A It is critical to match

It is critical to match the horsepower and voltage exactly

or environmental factors

It is compatible with R-134a

it features a 1/2-inch diameter shaft extending 4 inches

Does this DC model require a specific power supply

Velocity Boiler Works (Crown) 96-033 Vent Damper R-448A It is critical to matchThe Velocity Boiler Works (Crown) 96 033 is a 7 inch automatic vent damper designed to maximize the efficiency of residential and commercial gas boilers by preventing standby heat loss. As a field serviceable OEM replacement part, this motorized flue damper is critical for maintaining the proper draft in natural draft boilers. When the burner shuts down, the damper closes to keep residuals and heated air from escaping through the chimney, which