This single stage pump has a free air displacement of 35 Liters per minute and has a guaranteed ultimate vacuum of 15 microns of mercury (15 x 10-(3) Torr). It is quiet and weighs only 39 pounds. Pump operates at 600 RPM and is driven by a 1/3 HP motor. Overall dimensions: 14-1/4L x 9-7/8D x 10-1/2 inches high. Intake nipple takes 1/2 inch ID tubing. Complete with 1 quart of oil, 3-wire cord and plug, in-line switch, belt guard and gas ballast. For 120V, 60Hz, AC. (51220001)