Motor Specifications: 5" diameter, 2-3/4 thick, Shaft diameter is 1/2" x 2 5/8" long, 120 volt 2 wire, Single speed motor, 1100 RPM's 4.3 amps - Safe Amp Range within which the Motor Can Operate in the Application is 3.3 - 4.75,1/10th HP Rotation is clockwise viewing shaft end Mounts either as a belly band strap around the motor or with 3 studs out of the back of the motor spaced 4" apart triangularly. Can replace Broan part numbers F0516b2516 , 97009317, 99080267.