Lennox 74M59

Armstrong Air® Tune Up Repair Kit, Natural Gas, For Use With: G14 and G21-80 Series Gas Furnaces, Includes: (1) Air Box Gasket, (1) Gas Diaphragm, (1) Gasket, (8) No 6-32 x 1/4 Inch Screws, No 8-32 X 1/2 Inch Screws, No 8-32 X 3/4 Inch Screws, (1) 0.425 Inch Air Diaphragm and (2) Orifices