Lochinvar®, 100362646, Water Heater, High Power, 50 gal Tank, 480 V, 37.5/21.7 A, 18 kW Power, 1/3 pH ph, 1-1/4 in Water Connection, (3) Incoloy Heating Element, 74 gph at 100 deg F Rise Recovery Rate, 150 psi Pressure, 120 to 180 deg F, ASME: Yes, Steel, 55-3/4 in H x 21-3/4 in W x 27 in D Dimensions