80,000/52,000 BTU Two-Stage Psc Natural Gas Furnace, Volts: 115, Hertz: 60, Phase: 1, Airflow: Upflow/Horizontal, Cfm: 1200, Efficiency: 80%, Gas Connection: 1/2 N.P.T, Ignition: Hot Surface, Flue: 4", 1St Stage Input/Output Btu: 80,000/64,000, 2nd Stage Input/Output Btu: 52,000/41,600, Plenum Dims: 16-1/2"W X 19-5/8"D, Dims: 40"H X 17-1/2"W X 28-3/8"D, Weight:170 Lbs, In Mfg Box, Made in USA. (Approved Nat To Lp Conversion Kit:Unknown(Not Included)"