72,000 BTU "High Efficiency" Series Multi-Speed Induced Draft Natural Gas Furnace, Volts:115, Hertz:60, Phase:1, Airflow:Downflow, CFM:1,600, Efficiency:80, Gas Connection:1/2" N.P.T, Ignition:Hot Surface w/Smartlite Technology, Flue:4", Input/Output BTU's:72,000/57,600, Plenum Dims:15-7/8"W X 19-3/8"D, Dims:34-1/2"H X 17-1/2"W X 28"D, Weight:110 Lbs, In Mfg Box, Made In Mexico. (Approved NAT to LP Conversion Kit:904914(Not Included)