Bradford White® Gas Water Heater, 19 Series, 50 gal Capacity, 40000 Btu/hr BTU, First Hour Delivery: 75 gal, Energy Factor: 0.72, Recovery Rate: 44 gph, Vent Size: 2 in, 3 in, Vent Type: Power, 3.1 A, 110 V, 60 Hz, NPT Connection, 150 psi Pressure, Natural Gas Fuel, Direct Spark, Pilot Ignition, Vitraglas® Enamel, Lead-Free/Contains Lead: Contains Lead, 180 deg F, 22 in Dia x 65 in H x 27-3/16 in D, Altitude: 10100 ft, 1/2 in Gas Connection, 3/4 in Water Connection, Ultra Low Nox Burner