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specifically the larger DN40 (1-1/2") and DN50 (2") sizes with a standard threaded stem
maintaining the airflow efficiency of your air handler or condensing unit
this resilient mount is built to withstand the thermal stress and oil exposure common in boiler rooms
Internal Vacuum Breaker: Prevents "sticking" and ensures gravity-fed condensate can return to the riser without obstruction
Heil Quaker ICP 1175896 Blower Pulley 320788-703 specifically the larger DN40 (1-1/2")The Heil Quaker ICP 1175896 Blower Pulley is a precision engineered OEM replacement part designed for industrial and residential HVAC air handlers. This fixed bore pulley features a robust cast iron construction, ensuring long term durability and resistance to thermal expansion under high torque conditions. Engineered for a 5 8 inch shaft diameter, it provides a secure fit to maintain critical blower wheel RPM and optimal airflow velocity across the