OEM Blower Application Furnaces Inlet Diameter 4 3/4 in Outlet Diameter Not Applicable Compatible with Brand York Replacement For Manufacturer Model Number 7021-6770 Nameplate Voltage 208-230V AC Phase 1 Current 0.5 A Frequency 60 Hz Electrical Connection Wire Leads Motor Type Shaded Pole Motor Insulation Class B Maximum Fan Speed 3 000 RPM Maximum Motor Speed 3 000 RPM Maximum Inlet Air Temperature 400 Degrees F Maximum Static Pressure Not Applicable Wheel Diameter 4 1/2 in