Billows Replacement Fan Adapter (Single) SKU: TX-1604X-1A $15.00 In StockReady to shipIn StockReady to ship Add to Cart Billows Replacement Fan Adapter (Single) Billows Replacement Fan Adapter (Single) Qty Add to Cart Quantity -+ OverviewAccessories For use with 1 Billows fan. (Included with Billows).