4" Twin wall Connection from single wall SW flue (105) - 100mm Dia Zoom 4" Twin wall Connection from single wall SW flue (105) - 100mm Dia SKU: 105100SW Adaptor used to change from 100mm (4inch) single wall to 100mm (4inch) Twin wall flue Availability: In stock £32.99 Qty: Add to Cart Email to a Friend Additional Information Additional Information Additional Information SKU 105100SW Diameter 100mm (4") Components Adapters CMS tab x Add to Cart Price: Actual Price: Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page. You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart. Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page. You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.