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Designed to accommodate venting through a wall up to 15 thick. For Williams' direct-vent gravity models 2203821, 2203822, 3003821 and 3003822. Vent tubes only. Does not include outside cap. Made in the USA.<br><br>

Williams Vent Extension Tubes 9301 - 15&quot;L For 22000 & 30000 BTU Furnaces

vent-extension-tubes-9301-15l-for-22000-30000-btu-furnaces

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