AO Smith® Electric Water Heater, Upright, Series: Dura-Power™ DEN-40, 40 gal Tank, 480 VAC, 9000 W, 3 ph, 3/4 in FNPT Water Connection, (2) Zinc Plated Copper Sheath Heating Element, 101 gph at 36 deg F Rise Recovery, 150 psi, 120 to 181 deg F, ASME Yes/No: No, Baked Enamel, 24 in Dia x 32-1/4 in L