4500w, 240v, water heater fold back screw in better element, low watt density, 75+ watts per sqin, minimum tank diameter 13", sears, state, & whirlpool heaters, ul/csa listed, 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, detailed instructions included, 1 year warranty. Element is 12.75 inches high.