Bradford White®, RTGR199N1, Tankless Gas Water Heater, Series: GR Series, 199000 Btu/hr Heating, Natural Gas Fuel, 3/4 in NPT Gas Connection, 5 in Vent, Condensing Condensing/Non Condensing, 5.2 gpm Flow Rate, 0.95 Energy Factor, Wall Mounting, 3/4 in NPT Water Connection, 150 psi Pressure, 95 to 140 deg F, Ultra Low NOx: Yes, Indoor/Outdoor, 27.6 in H x 14.9 in D Dimensions, Commercial/Residential, Import