1/3 hp 1000 RPM (4 speed), 6.0 amps 115V Volts 60 Hz PSC Motor5.6" Dia. Frame, Rolled Steel, Flat Shaft 1/2" Diameter x 5 1/4"Service Factor = 1, Overload Protection: AutoFlex Mount, Sleeve Bearings, Class B Insulation, Rev1 Year Manufacture WarrantyDirect Drive Fan Motor for central HVAC systems. Wiring diagram on motor name plate. OAO = Open Air Over, K055TLK9377011B