Rheem® Gas Furnace, Classic Series, 50000 Btu/hr Input BTU Rating, 40000 Btu/hr Output BTU Rating, 115 V Voltage Rating, 9 A Amperage Rating, 750 to 960 cfm Rating, 1/2 hp HP Rating, 0.8 % AFUE Rating, 14.7 kW Wattage, 1 ph Phase, 60 Hz Frequency Rating, 2 Number of Stages, Horizontal Upflow Configuration, Connection Type: NPT, 1/2 in Connection, Electric Fuel Type, 11 in D x 6 in W Blower Size, 34 in H x 14 in W x 29.59 in D Cabinet Dimensions, Variable Speed ECM Motor Type, 3 ton Tonnage, Direct Spark Ignition Type, 0.05 kPa, 25 to 55 deg F Temperature Rise