Rheem® Gas Furnace, Endeavor™ Line Classic® Series, R921T Model, 70000 Btu/hr Input BTU Rating, 66500 Btu/hr Output BTU Rating, 115 V Voltage Rating, 10 A Amperage Rating, 1/2 hp Rating, 92 % AFUE Rating, 373 W Wattage, 1 ph Phase, 60 Hz Frequency Rating, 1 Number of Stages, 4-Way Multi-Position Configuration, Connection Type: NPT, 1/2 in Connection, Natural, Propane Gas Fuel Type, 8 in W x 11 in D Blower Size, 34 in H x 17.5 in W x 29.63 in D Cabinet Dimensions, Constant Torque Motor Type, Vent Vent, Ducted or Ductless, 15 A Fuse Rating, 3 ton Tonnage, PlusOne™ Ignition System, Direct Spark Ignition Type, 0.9 in-WC, 40 to 70 deg F Temperature Rise