80,000 BTU Low NOx Upflow/Horizontal Gas Furnace, Efficiency: 80%, Volts: 115, Hertz: 60, Phase: 1, CFM: 1420, Stage: Two, Speed: Variable, Motor Type: ECM, BTU Input: 80,000, BTU Output: 64,000, Dimensions: 34-1/2''H X 17-1/2''W X 28''D ***Propane Conversion Kit: 904914 (Not Included)*** ***Unit includes a Manufacture Warranty, register your unit with the Manufacturer for details***