Bradford White® Gas Water Heater, Series: Commander Series®, 199999 Btu/hr Heating, Natural Gas Fuel, 3/4 in Gas Connection, 100 gal Tank, Spark Ignition, Atmospheric Vent, 6 in Vent, 197 gph at 100 deg F Rise Recovery Rate, Up to 82 % Energy Efficiency, Floor Mounting, 1-1/2 in NPT Water Connection, 150 psi Pressure, Up to 180 deg F, Yes Ultra Low NOx, ASME: No, Steel, 28 in Dia x 30 in D x 70 in H, Domestic