Coralife's Luft Pump produces a high-pressure output ideal for protein skimmers, reactors, and other high pressure/high flow devices. The Luft Pump's rugged construction features a coated coil, a durable rubber diaphragm and ozone-resistant materials to ensure years of reliable performance. The pump also features an adjustable rheostat, allowing air flow rate and pressure to be fully regulated to suit the requirements of any air-driven device. Specifications: 120 Volts 5 Watts Single outlet Air filter 7.0 P.S.I. 4.0 L.P.M. 3 foot cord Size: 5" l x 3" w x 2" h Warranty: 1 Year Warranty