Product Overview Manuals and Guides Product Overview Williams Furnace Vent Extension for Direct Vent Furnaces. It is for use with walls that are 9 - 15 inches thick. 15" Extension for a 22,000 BTU Direct Vent Furnaces, model 22038 and 30,000 BTU Direct Vent Furnaces, model 3003 Product Manuals Load More
Williams Furnace Company 2302 High Capacity Single Speed Blower for 22000 and 30000 BTU Furnaces $279.00