Designed for dependable service in high moisture environment. Features moisture-resistant insulation and internal treatment, resilient ring. Automatic reset thermal overload protection, permanently lubricated bearings. Motors are 115V (volt), A. O. Smith and UL (Underwriters Laboratories) approved with 1/2" shaft size. Motor rotates clockwise when looking at the shaft. Please double check that your unit uses the same rotation motor. Base no included.