Hydrotherm BM-3336 Insulated Base Door The 440V rating indicates the

The 440V rating indicates the maximum voltage the part can handle

In a normal operating state

This model comes equipped with 19-inch 18-gauge nickel chrome lead wires insulated with fiberglass for high-temperature durability

This is a manual reset switch

and safety circuit monitoring

Hydrotherm BM-3336 Insulated Base Door The 440V rating indicates theThe Hydrotherm BM 3336 Insulated Base Door is a critical OEM replacement part engineered for high performance thermal containment in Hydrotherm R Series boilers. Designed to fit Model R gas furnaces, including the R 180C, R 210C, R 250C, and R 300B, this insulated boiler door features a steel frame and high density foam insulation to mitigate heat loss at the unit's base. Implementing a Hydrotherm BM 3336 ensures energy efficiency by maintaining