RUUD® Gas Furnace, Line Achiever® Series, 50000 Btu/hr Input BTU Rating, 40000 Btu/hr Output BTU Rating, 115 V Voltage Rating, 11 A Amperage Rating, 1450 cfm Rating, 3/4 hp HP Rating, 80 % AFUE Rating, 1 ph Phase, 60 Hz Frequency Rating, 1 Number of Stages, Horizontal, Upflow Configuration, Connection Type: NPT, 1/2 in Connection, 5 Number of Speeds, 7 in W x 11 in D Blower Size, 28-1/16 in L x 17-1/2 in W x 34 in H Cabinet Dimensions, Constant Torque Motor Type, 15 A Fuse Rating, 4 ton Tonnage, PlusOne Ignition System, Direct Spark Ignition Type, 0.9 in WC, 25 to 55 deg F Temperature Rise, Standard Nox, Non-Communicating Controls, Standard Grade Additional Information