Ideal for high-resistance and multiple output applications. Also suitable for limewood and other airstones, foam filters, corner filters, under-gravel filters, and air-driven ornaments, especially in deep-water applications. Output pressure 3.9 PSI Output flow rate 2.3 cubic feet/min (65 liters/min) 35 watts Power supply 120V / 60Hz Total current 0.6 Amps