The Coralife SL-38 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 applications.Features:2.9 PSI and 38 LPM outputAdjustable 4-outlet metal valve 6-outlet plastic valve Heavy-duty, powder coated aluminum housing Removable Air Filter Vibration dampening rubber base 6"L X 4"W X 5"H