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Our Back Draught Shutters can help you! In this selection contain 4" 100mm shutters that are designed to stop backdraught when a fan is switched off. Our back draught shutters can fit inside 100mm round pipe or 102mm flexible hose and can be used to join multiple lengths of pipe together to form a long duct run.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.