66,000 BTU Low NOx Multiposition Gas Furnace, Efficiency: 80%, Volts: 115, Hertz: 60, Phase: 1, CFM: 1720, Stage: Single, Speed: Variable, Motor Type: ECM, BTU Input: 66,000, BTU Output: 54,000, Dimensions: 33-1/3''H X 17-1/2''W X 29''D ***Propane Conversion Kit: AGAGC8NPS01A (Not Included)*** ***Unit includes a Manufacture Warranty, register your unit with the Manufacturer for details***