{"product_id":"4-inch-inline-backdraught-shutter","title":"4 Inch Inline Backdraught Shutter","description":"\u003cstrong\u003eIN-LINE BACKDRAUGHT SHUTTER\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eThe 4 inch In Line Backdraught Shutter for 100mm Ducting prevents cold air entering the duct system and room. It is commonly used with inline mixed flow fans but may be used in conjunction with any 4 inch centrifugal or axial fan too.\u003cbr\u003e\u003cbr\u003eLength of product: 61mm x 100mm","brand":"National Ventilation","offers":[{"title":"Default Title","offer_id":58031867003144,"sku":"NVT MONV303","price":9.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1044\/2362\/0872\/files\/4-inch-inline-backdraught-shutter-284-p.jpg?v=1784040705","url":"https:\/\/www.extractorfanworld.co.uk\/products\/4-inch-inline-backdraught-shutter","provider":"Extractor Fan World","version":"1.0","type":"link"}