5500w 240v water heater screw in fold back element, 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, gasket included, detailed instructions included, high watt density, 150+ watts per sqin, minimum tank diameter 11", 1 year warranty. Element is 10 inches high.