The Grainger 16P471 is a 1/2 HP, 115V, 1725 RPM, 56C Frame, Open Drip Proof, Single Phase, Ball Bearing, Electric Motor. It has a 1/2" diameter shaft and measures approximately 9-1/2" long by 5-3/4" wide. This motor can be used for a variety of industrial applications and is totally enclosed and fan cooled for protection against dirt, dust and moisture. It requires a minimum 12 gauge wire and 30 amp circuit breaker and operates on single phase 115V power. The 16P471 has a 1 year warranty and weighs approximately 18 lbs.