{"product_id":"100mm-gravity-shutter-for-extractor-fans-black-finish","title":"100mm Gravity Shutter for Extractor Fans – Black Finish","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThis 4-inch gravity shutter offers a practical and tidy solution for terminating ventilation ducting through external or internal walls. Designed specifically for use with 100mm extractor fans, it provides a clean, professional finish to wall openings while serving a crucial protective function. The gravity-operated louvres open automatically when the fan is in use, allowing moist or stale air to exit freely, and close securely when the fan stops, creating an effective seal against the outside environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eConstructed for durability and reliable performance, this shutter is compatible with both rigid and flexible 100mm round ducting, making it a versatile choice for a variety of installations. Whether fitted in a bathroom, kitchen, or utility area, it helps maintain indoor comfort by preventing cold backdraughts and rain penetration. Additionally, the closed louvres act as a barrier against insects, rodents, and other vermin, ensuring your ventilation system remains clean and unobstructed when not in operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eGravity-Operated Louvres\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Open automatically with fan operation and close securely when not in use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eBackdraught Prevention\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Stops cold air and draughts from entering through the ventilation opening.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWeather Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Designed to resist rain penetration when the shutter is in the closed position.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eVermin Barrier\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Closed louvres prevent insects, rodents, and other pests from entering via ducting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWide Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Suitable for use with 4 inch\/100mm extractor fans and round rigid or flexible ducting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eDurable Black Finish\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Robust construction with a neutral black colour that blends with most exterior and interior surfaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003ePeace of Mind\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Backed by a 1-year warranty.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eSize\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100mm (4 inches)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 inch \/ 100mm extractor fans\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eDucting Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100mm round rigid or flexible ducting\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eColour\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBlack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eOperation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGravity shutter (passive louvres)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Year\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVENTGRILL\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.20kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eFAQs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e1. How does a gravity shutter work?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe louvres are opened by the force of air from the extractor fan when it is running. Once the fan stops, the louvres close by gravity, sealing the opening.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e2. Can this shutter be used on an external wall?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYes, it is specifically designed for installation through external or internal walls and provides protection against rain penetration and backdraughts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e3. Will this fit my existing 100mm ducting?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe shutter is designed to connect to standard 100mm round rigid or flexible ducting, making it compatible with most 4-inch ventilation systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e4. Does this shutter include a fly screen?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWhile the gravity louvres themselves act as a physical barrier to large insects and vermin when closed, this model does not include a separate fine mesh fly screen.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e5. Is the shutter suitable for use in a bathroom?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYes, it is ideal for bathroom extractor fan installations where preventing cold draughts and maintaining energy efficiency is important.\u003c\/span\u003e\u003c\/p\u003e","brand":"UKEW","offers":[{"title":"Default Title","offer_id":57160881865086,"sku":null,"price":4.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/3832\/4350\/files\/100mm-4-inch-extractor-fan-gravity-shutter-black-761-550x550h.png?v=1774381638","url":"https:\/\/ssmelectric.co.uk\/products\/100mm-gravity-shutter-for-extractor-fans-black-finish","provider":"SSM ELECTRIC","version":"1.0","type":"link"}