110,000/72,000 BTU Two-Stage Constant Torque ECM Natural Low NOx Gas Furnace, Volts:120, Hertz:60, Phase:1, Airflow:Downflow, CFM:2000, Efficiency:95, Gas Connection:1/2" N.P.T, Ignition:Hot Surface, Flue:2-1/2", 1st/2nd Stage Input BTU:110,000/72,000, 1st/2nd Stage Output BTU:106,000/70,000, Plenum Dims:19-1/2"W X 19-1/2"D, Dims:33-1/2"H X 21"W X 28-3/8"D, Weight:180 Lbs, In Mfg Box, Made In Mexico. Approved Natural Gas To LP Conversion Kit: (78W94Or 11K48) Not Included