50 Gallon High Recovery Power Vent Natural Gas Water Heater.6-year limited tank & parts warranty.Electronic gas control valve, Sidewall venting up to 125 feet, Vents using inexpensive schedule 40 PVC, CPVC, or ABS pipe, More powerful modular blower with 110/120 volt electrical system, factory-installed 7-foot power cord, Advanced Intelli-Vent(TM)* gas control valve, Glass-lined tank with heavy duty anode rod protects against corrosion, Non-CFC foam insulation, Eco-Friendly Green Choice(TM) gas burner Ñ reduces NOx emissions by 33%,Factory-installed PEX polymer lined heat trap nipples, Factory-installed (T&P) relief valve. Nominal Capacity: 50 Rated Storage Volume:48 UEF: 0.72 EF: 0.70 Max BTUs Input: 50,000 Emissions: Low NOx Ignition Type: Electronic Water Connection Location: Top Water Connection Size: 3/4 First Hour Rating: 97 gallons H: 65" Height w/Draft Hood (inches): 68 1/2" D: 22" W: 22" L: 22" Weight: 192 lbs Vent Size: 2, 3 or 4