1 HP direct drive constant torque ECM blower motor; Volts: 208-230, Amps: 7, Hertz: 50-60, Phase: 1, RPM: 1050, Rotation: reversible, Frame: 48, Speed: variable, Shaft: single, Shaft Dims: 1/2" flat x 4-1/2" length, Body: open air over, Motor Length Less Shaft: 7-1/4", Overall Dimensions: 12" x 5-5/8", in mfg box, made in Mexico