Series: 200, 140000 Btu/hr Heating, Liquid Propane/Natural Gas, 3/4 in NPT Gas Connection, Electronic Ignition, 4 in Vent, Condensing/Non Condensing: Non-Condensing, 6.6 gpm, 0.81, 3/4 in NPT Water Connection, 10.5 in WC, 35 deg F, Ultra Low NOx: Yes, Copper, Indoor/Outdoor: Outdoor, 20-1/2 in H x 13-3/4 in W x 9-1/2 in D, Commercial/Residential/Dual: Commercial/Residential (Price subject to change without notice. Check stock before order)