AO Smith® Gas Water Heater, Dampered, Series: BTR-365, 365000 Btu/hr Heating, Natural Gas, 3/4 in Gas Connection, 85 gal Tank, Intermittent Electronic Ignition, 8 in Vent Size, 885 gph at 40 deg F Rise Recovery, 80 % Energy Efficient, 1-1/2 in NPT Water Connection, 160 psi, 120 to 180 deg F, Tall or Short: Tall, Ultra Low NOx: No, ASME Yes/No: No, 79-1/2 in H