Rheem® Gas Furnace, Classic Series, R801C Model, 125000 Btu/hr Input BTU Rating, 100000 Btu/hr Output BTU Rating, 115 V Voltage Rating, 15 A Amperage Rating, 2000 cfm Rating, 1 hp HP Rating, 0.8 % AFUE Rating, 37 kW Wattage, 1 ph Phase, 60 Hz Frequency Rating, 1 Number of Stages, Down and Downflow Zero Clearance Configuration, Connection Type: NPT, 1/2 in Connection, Electric Fuel Type, 11 in D x 10 in W Blower Size, 34 in H x 24.5 in W x 29.59 in D Cabinet Dimensions, Cabinet Constant Torque Motor Type, 3.5 to 5 ton Tonnage, Direct Spark Ignition Type, 0.05 kPa, Aluminized Steel, 35 to 65 deg F Temperature Rise