4500W 240V, 12-1/2"H, Water Heater Universal Flange Element, Detailed Instructions Included, High Watt Density, 150+ Watts Per SQIN, Minimum Tank Diameter 15", Gasket Included, Fits Most Models Of American, A.O. smith, Bradford White, Craftmaster, General Electric, GS Wood, Kenmore, Lochinvar, Maytag, Mor-Flo, Reliance, Rheem, Richmond, Ruud, Sears, State, & Whirlpool Heaters, UL Listed, 1 Year Warranty.