40,000 BTU Low NOx Upflow/Horizontal Gas Furnace, Efficiency: 80%, Volts: 115, Hertz: 60, Phase: 1, CFM: 1200, Stage: Single, Speed: Multi, Motor Type: ECM, BTU Input: 40,000, BTU Output: 32,000, Dimensions: 33-3/8''H X 14''W X 28''D, Weight: 86 lbs ***Propane Conversion Kit: LPT-03 (Not Included)*** ** Dent in the back of unit. Heat exchanger is slightly bent.**