45,000 BTU High Efficiency" Series Single Stage Natural Gas Furnace, Volts:115, Hertz:60, Phase:1, FLA:4.8, CFM:435-1260, Airflow:Upflow/Horizontal, Efficiency:80, Input BTU:45,000, Output BTU:36,000, Gas Connection:1/2" N.P.T, Ignition:Hot Surface, Flue:3", Motor:1/3HP, 4 Speed, PSC, Plenum Dims:12-5/8"W X 19"D, Overall Dims:34-1/2"H X 17-1/2"W X 28"D, Weight:100 Lbs, In Mfg Box, Made In USA.(Approved Natural Gas To Lp Conversion Kit:Us Kit-90914, Canada Kit-904915 Not Included)