35000 Btu/hr Heating, Natural Gas, 30 gal Tank, Spark Ignition, 3 in Vent, 33 gph Recovery, Energy Factor: 0.63, 3/4 in NPT Water Connection, 150 psi, Tall or Short: Tall, Ultra Low Nox: Yes, Magnesium Anode Rod/Steel Tank, 58-7/8 in H Top of Heater, 62-1/8 in H Top of Vent (Price subject to change without notice. Check stock before order)