120 volt A.C. 3/16 x 1 3/8 long shaft. Reversable. Two speed. 1500 rpm (.34 full load amps) 3000rpm (.55 full load amps) 3 inches long from end of shaft to back of motor. Distance between motor bolts is 1-7/8 inches. 5/8 lamination stack height. Blade diameter is 5-1/4 inches. Motor and fan engineered for maximum airflow and quiet operation. Note: Comes with adapter plate and screws to convert from the old style round motor. Note the 2 7/8 spacing of outer holes on adapter plate. We also supply 3 inch long motor screws in case you have an unusual mounting situation. Instructions are included. This motor will replace any Rangaire or Kitchenaire motor that uses a fan blade. 1/4 diameter and 5/16 diameter shaft bushings are included. It will find a happy home in many other brands of hoods as well. Call me before or during your motor/fan project. I enjoy success stories as well. Erving Anderson 866-399-1200. This motor and mounting bracket will replace many round motors costing between $60.00 and $100.00. We have people call with success stories about this all the time.