28 gallon, electric, lowboy water heater, dual 4500w, 240v elements, 2" insulation on tank, insulation blanket included inside box, .95 energy factor when insulation blanket installed, recovery at a 90 rise-gallons/ hours 21, first hour rating 39, t & p valve, pex polymer lined heat trap nipples, pex dip tube, glass lined tank, aluminum anode rod, unit dimensions: 30"h x 22"d, 6 year tank & parts warranty, meets new naeca 2015 efficiency standards, shipped with factory insulation blanket.