American Standard® Gas Fired Furnace, Model: S9X1, 77600 Btu/hr Input BTU, 115 VAC, 14.1 A, 1 hp, 92.1/96 % AFUE, 1 ph Phase, 60 Hz, 1 Stages, Horizontal Left, Horizontal Right, Upflow, 1/2 in Connection, Gas Fuel, 4 Burners, 9 Speed, 11 in Dia x 10 in W Blower, 34 in H x 21 in W x 28-3/4 in D Cabinet Dimensions, Constant Torque ECM Blower Motor, 1075 rpm Rotational Speed, Vent, Ducted or Ductless: Vent, 2 in Dia Vent, 5 ton Tonnage, Silicon Nitride Ignition, Steel, Pre-Painted Galvanized, 45 to 75 deg F Temperature Rise, 409 Stainless Steel Exchanger Material