40,000 BTU Low NOx Upflow/Horizontal Communicating Compatible Gas Furnace, Efficiency: 96%, Volts: 115, Hertz: 60, Phase: 1, CFM: 1200, Stage: Two, Speed: Variable, Motor Type: ECM, BTU Input: 40,000, BTU Output: 38,400, Dimensions: 34-1/2''H X 17-1/2''W X 28-7/8''D, Weight: 114 lbs ***Propane Conversion Kit: LPM-08 (Not Included)*** **Compatible With Comfortbridge Technology Units**