Features:

• Thru the wall - thru the roof venting of combustion products.3/4"" top water connections and side space heating connections.1/2"" gas connection
• T & P valve conveniently located on the side of the tank to facilitate piping to a drain or external to the building
• Combination thermostat / ECO with factory-preset pressure regulator and built-in millivolt powered energy cut-off for overheat protection.40 GALLON, 36,000 BTU\LINE 22"" DIAM. X 50-1/2"" H6 year warranty tank/parts.1-year warranty labor