Rheem® Gas Furnace, Classic® Series, 50000 Btu/hr Input BTU Rating, 115 V Voltage Rating, 9 A Amperage Rating, 1301 cfm Rating, 1/2 hp HP Rating, 80 % AFUE Rating, 1 ph Phase, 60 Hz Frequency Rating, 1 Number of Stages, Downflow Configuration, Connection Type: NPT, 1/2 in Connection, Electric Fuel Type, 5 Number of Speeds, 6 in W x 11 in D Blower Size, 34 in H x 14 in W x 28-1/16 in D Cabinet Dimensions, Constant Torque Motor Type, Vent Vent, Ducted or Ductless, 6 in Vent Size, 15 A Fuse Rating, 3 ton Tonnage, PlusOne® Ignition System, Direct Spark Ignition Type, 0.12 kPa, Steel, Aluminized, 25 to 55 deg F Temperature Rise, Standard Nox Additional Information