Bradford White® Gas Water Heater, Ultra High Efficiency, Series: eF Series®, 399999 Btu/hr Heating, Natural Gas, 1 in Gas Connection, 119 gal Tank, Direct Spark Ignition, Direct/Power Vent, 4 in Vent Size, 456 gph at 100 deg F Rise Recovery, 1-1/2 in NPT Water Connection, 150 psi, 180 deg F, Ultra Low NOx: No, ASME Yes/No: No, Steel, Vitraglas®, 33 in Dia x 35 in D x 77-1/8 in H, Domestic