The Coralife SL-65 Super Luft Aquarium Air Pump produces a high-pressure output perfect for protein skimmers, ozone/oxygen reactors and other high-pressure/high-flow devices. Also suitable for limewood and other airstones, foam filters, corner filters, under-gravel filters, and air-driven ornaments, especially in deep-water applicationsFeatures:3.9 PSI and 65 LPM output Adjustable 4-outlet metal valve 6-outlet plastic valve Heavy-duty, powder coated aluminum housing Removable Air FilterVibration dampening rubber base6"L X 4"W X 5"H