"This LEESON 115V split-phase motor is designed for commercial duty air over fan motors for air circulators. UL recognized/CSA certified. HP 1/4, CSA Yes, Shank Diameter in. 1/2, Amps 5 @ 115V, Motor Phases Split, UL Yes, Frame Type NEMA 48Z, Rated RPM 1,725, Rotation Direction Clockwise or counter clockwise, Resilient Base Yes, Volts 115, Open Drip Proof Housing Yes, Hertz 60, Auto Overload Protection Yes. Automatic reset protector 1/2 in. dia. shaft with flat includes sleeve kit to convert to 5/8 in. shaft with keyway Service factor 1.35"