American Standard® Gas Furnace, Model: S9X1, 116400 Btu/hr Input BTU, 120000 Btu/hr Output BTU, 115 VAC, 92.1/95 % AFUE, 1 ph Phase, 1 Stages, Downflow, Gas Fuel, Constant Torque ECM Blower Motor, 5 ton Tonnage, Silicon Nitride Ignition, Steel, 409 Stainless Steel Exchanger Material