Commercial Gas Water Heater; Inlet/Outlet Connection 1-1/2 Inch Threaded x 1-1/2 Inch Threaded; Gas Type Natural; Gas Connection 1-1/2 Inch Threaded; Relief Valve Details CSA/ASME T and P Relief Valve Supplied; Venting Type Direct, Power; Draft Hood Outlet/Vent Size 4 Inch; Input Supply Rating 399900 BTU/Hour; Tank Dimensions 33-1/8 Inch Diameter x 75-3/4 Inch Height; Tank Material Seamless Glass Lined Steel; Tank Capacity 119 Gallon; Tank Warranty 3 Year Limited; GPH Recovery 512 GPH at 90 Deg F; ASME Code Yes; Ignition Type Direct Spark; Drain Valve Details 3/4 Inch Threaded; Insulation Details Foam; Burner Type Down-Fired Pre-Mix Powered; Energy Saver Conformance Yes; Options Concentric Vent Kit, Low Profile Termination Vent Kit, Condensate Neutralization Kit; Inclusions/Features Intelligent Control System, LCD Display, Submerged Combustion Chamber, Helical Heat Exchanger Coil, Powered Anode Standard, Mechanical Venting Versatility, Space-Saving Design; Applicable Standard AHRI, ANSI Z21.10.3/CSA 4.3, ANSI/NSF 5, ASHRAE/IESNA 90.1, SCAQMD 1146.2, UL (Canada and US), ASME (HLW); Lead-Free; Voltage Rating 120 Volt AC at 60 Hertz 5 Amp; Working Pressure Rating 160 PSI; Maximum Gas Inlet Pressure Rating 14 Inch WC