Electric Tankless Water Heater Operating Voltage 277V AC Phase Single Cold Inlet Size 3/4 in Maximum Flow Rate 4 gpm Minimum Flow Activation 1.5 gpm Overall Height 10.25 in Overall Width 10.75 in Overall Depth 4.5 in Power Consumption 16 000 W Maximum Delivered Temperature 60 Degrees F Minimum Delivered Temperature 90 Degrees F Adjustable Thermostat Yes Current 58 A Environment Indoor Market Commercial Industrial Application Single or Multi-Fixture