Product Overview
Williams Furnace Inner Liner for direct replacement on Williams Forsaire 4007 Series (4007332, 4007732, 4007331, 4007731) Counterflow Direct Vent Furnaces and 5008 Series (5008631, 5008632) Counterflow Top Vent Furnaces.
Click here to download the replacement parts lists and exploded view diagrams. Please refer to the appropriate section for your specific furnace.
