The Grainger 16V981 is a 1/2 HP, 115V, 1725 RPM, 56C Frame, Open Drip Proof, Single Phase, Ball Bearing, Electric Motor. It has a NEMA standard 56C frame with a 1.15 service factor. The motor is totally enclosed and fan cooled with Class F insulation and a thermally protected design. It can be used for general purpose applications. The motor dimensions are 6-7/8" Diameter x 7-3/16" Long with a 5/8" diameter shaft and 1/4" keyway. It weighs approximately 18 pounds.