Ametek-Lamb 115923-00 motor is 2-stage, 5.7 inch, 110-120 volt. Motor Specs * Motor Type: Thru Flow * Discharge: Peripheral * Bearings: Double Ball Bearing * Sealed Vacuum: 100.4 inches * Maximum Air Watts: 447 * Maximum Air Flow: 122 CFM * Motor Speed: 23,700 RPM