3500W, 240V, 13.5"H, Water Screw In Heater Element, High Watt Density, 150+ Watts Per SQIN, Fits Most Models Of American, A.O. Smith, Bradford White, Craft Master, General Electric, GS Wood, Kenmore, Lochinvar, Maytag, Mor-Flo, Reliance, Rheem, Richmond, Ruud, Sears, State, & Whirlpool Heaters, Gasket Included, Detailed Instructions Included, Minimum Tank Diameter 14", UL Listed, 1 Year Warranty.