Bradford White® Gas Water Heater, Series: eF Series®, 250000 Btu/hr Heating, Natural Gas, 3/4 in NPT Gas Connection, 100 gal Tank, Direct Spark Ignition, Direct Vent, 735 gph Recovery, 0.97 Energy Efficient, 1-1/2 in NPT Water Connection, 150 psi, 180 deg F, Ultra Low Nox: Yes, Steel, 28-1/4 in Dia x 77-5/8 in H, Domestic