40,000 BTU Gas Furnace, Efficiency: 96%, Volts: 115, Hertz: 60, Phase: 1, CFM:1200, Stage: 1, Speed: Variable, Motor Type: ECM, BTU Input: 40,000, BTU Output: 38,400, Dimensions: 34-1/2''H X 17-1/2''W X 28-3/4''D, Weight: 115 Lbs, Plenum Opening Dimensions: 16" X 19-1/2", In Mfg. Box, Made In USA. This Furnace Can NOT Be Converted To Propane. ***Unit Includes A Manufacture Warranty, Register Your Unit With The Manufacturer For Details***