36 gallon rated capacity, electric water heater, low boy, top plumbing inlet-outlet, 32.8 actual tank capacity, .95 energy factor, dual 4500w, 240v elements, 2" insulation, recovery at a 90 degrees rise-gallons/hours 21, first hour rating gallons 44, t & p valve, pex polymer lined heat trap nipples, glass lined tank, aluminum anode rod, unit dimensions: 32"h x 24"d, 6 year tank & parts warranty, 118 lbs, meets new naeca 2015 efficiency standards. requires 30 amp breaker