Williams Furnace Company 11B144 Air Inlet Extension for Forsaire Counterflow Direct Vent Furnaces


This replacement air inlet extension is part of venting kits 9802 and 9809. It is for use with specified Williams Forsaire Counterflow Direct Vent Furnaces.

It is compatible with the following Counterflow Direct Vent models:
  • 4007332, 4007331, 4007732, 4007731
  • 5507332, 5507331
  • 6007732, 607731
Click here to download the replacement parts lists and exploded view diagrams. Please refer to the appropriate section for your specific furnace.
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Usually Leaves Warehouse in 2 - 3 Business Days
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