Lomanco Power Vent Attic Fan Motor 1/10hp 1500 RPM 115 Volts # OLM6151 1/10 hp 1100 RPM, 4.4 amps, 115 Volts 60hz. 5" Diameter Motor - Shaft: 1/2" Diameter x 2" (1-11/16" with Flat on Shaft) CW rotation facing the shaft; Sleeve Bearings Motor length less shaft = 2-7/8" 1 Year Manufacture Warranty