54,000 BTU Low NOx Upflow/Horizontal Gas Furnace, Efficiency: 80%, Volts: 115, Hertz: 60, Phase: 1, CFM: 1350, Stage: Single, Speed: Multi, Motor Type: ECM, BTU Input: 52,000, BTU Output: 42,000, Dimensions: 34-1/2''H X 14-1/4''W X 28''D, Weight: 95 lbs ***Propane Conversion Kit: 905028 (US), 905029 (Canada) (Not Included)***