Electric Tankless Water Heater, Operating Voltage 480V AC, Phase Three, Cold Inlet Size 3/4 in, Maximum Flow Rate 20.5 gpm, Minimum Flow Activation 0.5 gpm, Overall Height 18.52 in, Overall Width 20.47 in, Overall Depth 5.84 in, Power Consumption 20,000 W, Maximum Delivered Temperature 70 Degrees F, Minimum Delivered Temperature 180 Degrees F, Adjustable Thermostat Yes, Current 24 A, Environment Indoor, Market Commercial, Industrial