American Standard GN40T1-3-6 40 Gallon Residential Water Heater

Complies with NAECA Requirements Ultra-Low NOx Burner Vaporshield Technology Spark Igniter Standard Thermocouple Self-Cleaning NON-CFC Foam Insulated Heavy Gauge Steel Tank Glass-Lined Tank Magnesium Anode Rod Factory Installed Dielectric Hot and Cold Water   Connections Brass Drain Valve Factory Installed Heat Traps Temperature and Pressure Relief Valve Factory Installed energy cut-off system Design Certified by CSA International Choice of 6 or 12 Year Limited Tank Warranty   Click on link for spec sheet http://www.americanstandardwaterheaters.com/pdf/residential/American-Standard-GN-Ultra-Low-NOx.pdf