Rheem® Line Gas Furnace, Prestige® Series, 56000 Btu/hr Input BTU Rating, 54320 Btu/hr Output BTU Rating, 115 V Voltage Rating, 954 cfm Rating, 1/2 hp HP Rating, 97 % AFUE Rating, 373 W Wattage, 1 ph Phase, 60 Hz Frequency Rating, 2 Number of Stages, Downflow, Horizontal Configuration, Connection Type: NPT, 1/2 in Connection, 5 Number of Speeds, 8 in W x 11 in D Blower Size, 17-1/2 in W Cabinet Dimensions, ECM Motor Type, Vent Vent, Ducted or Ductless, 2 in, 3 in Vent Size, 10 A Fuse Rating, 3 ton Tonnage, PlusOne® Ignition System, Direct Spark Ignition Type, Steel, Aluminized, 40 to 70 deg F Temperature Rise