GRANBY Oil-Fired Warm Air Furnace, 1/2 hp, Input BTU Rating: 77/91/105 MBtu/hr, Output BTU Rating: 66/79/91 MBtu/hr, 1230 cfm, 86 to 86.8 % AFUE Rating, High Efficiency Gas/Oil Burner, Electronic Ignition, Blower Motor, 4 Speed, Chimney Vent, Stainless Steel, 33 in H x 21-1/2 in W x 49-1/8 in D