90,000 BTU Communicating Compatible Modulating Natural Gas Furnace/W Comfort Control System, Volts:115, Hertz:60, Phase:1, Airflow:Downflow, Cfm:1200-2000, Efficiency:92.3, Ignition:Direct Spark, Flue:2", BTU Input/Output:90,000/83,160, Gas Connection:1/2", Plenum Opening Dims:19-3/4"W X 20"D, Dimensions:34-3/4"H X 21"W X 28-1/8"D, Weight:156 Lbs, In Mfg Box, Made in USA. Approved Nat To Lp Conversion Kit:Rxgj-Fp07/Fp27(Not Included And Appears Kit Is Now Obsolete)