40 Gallon, Medium, Electric Water Heater, Max Wattage: 6,000, 240V, Copper Sheathed Heating Elements, Dual 4500W, Pex Dip Tube, Glass Lined Tank With Anode Rod Protects Against Corrosion, Environmentally Friendly Non CFC Foam Insulation, Factory Installed Pex Polymer Lined Heat Trap Nipples, Factory Installed Temperature & Pressure Relief Valve, Rated Storage Volume: 37, First Hour Rating Is 55 Gallons, Water Connection Is Located At The Top Of The Water Heater, Water Connection Size: 3/4", Self Cleaning Tank, UEF: 0.92, EF: 0.95, Unit Dimensions: 50"H x 20 1/2"D, 6 Year Limited Tank & Parts Warranty.