40 Gallon Natural Gas Sealed Combustion Mobile/Manufactured Home Water Heater With Convertible Control & Conversion Kit To Convert To LP 32 000 BTU’s 33 GPH 1′ Insulation R-Value 8.00 .59 Energy Factor Factory Installed T & P Valve Must Be Installed With Factory Roof Jack Shipped With Unit Unit Dimensions 56-1/2′ Tall x 20′ Diameter 6 Year Tank & Parts Warranty For Mobile/Manufactured Home Installation Only. This item may require an additional freight surcharge. You will be contacted if that is the case.