Thermo Pride® Gas Fired High-Efficiency Furnace, CMA4 Model, 50000 Btu/hr Input BTU Rating, 48000 Btu/hr Output BTU Rating, 115 VAC Voltage Rating, 7.15 A Amperage Rating, 1/2 hp Rating, 95 % AFUE Rating, 1 ph Phase, 60 Hz Frequency Rating, Downflow Configuration, Natural Gas Fuel Type, 18 in W x 25-3/4 in D x 57 in H Cabinet Dimensions, PSC Motor Type, 1065 rpm Rotational Speed, Vent Vent, Ducted or Ductless, 2 in Vent Size, 24 VAC Transformer Rating, 4.5 to 14 in-WC, 55 deg F Temperature Rise, Domestic Domestic/Import, 18 x 24 x 1 in Filter, 12-9T Direct Drive High Speed Blower Additional Information