{"title":"Aluminium Louvres for Building Ventilation","description":"\u003cp\u003eStruggling with stale air, weather exposure, or unsightly vents spoiling your façade? \u003cstrong data-start=\"86\" data-end=\"132\"\u003eAluminium Louvres for Building Ventilation\u003c\/strong\u003e work seamlessly with \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/extractor-fans\"\u003e\u003cstrong data-start=\"154\" data-end=\"172\"\u003eExtractor Fans\u003c\/strong\u003e\u003c\/a\u003e to control airflow, protect interiors, and keep buildings breathing properly—without compromising durability or design.\u003c\/p\u003e\n\u003cp data-start=\"42\" data-end=\"441\"\u003eEffective building ventilation relies on more than just airflow—it needs control, protection, and durability. \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/weather-louvres\"\u003e\u003cstrong data-start=\"152\" data-end=\"198\"\u003eAluminium Louvres for Building Ventilation\u003c\/strong\u003e\u003c\/a\u003e work alongside \u003cstrong data-start=\"214\" data-end=\"232\"\u003eExtractor Fans\u003c\/strong\u003e to manage air intake and exhaust while shielding interiors from rain, debris, and unwanted ingress. They’re a trusted solution for commercial, industrial, and architectural ventilation projects across the UK.\u003c\/p\u003e\n\u003ch2 data-start=\"448\" data-end=\"512\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/weather-louvre-front.jpg?v=1770649583\" alt=\"Aluminium Square Weather Louvre External - eFans Direct Ltd\"\u003e\u003c\/h2\u003e\n\u003ch2 data-start=\"540\" data-end=\"602\"\u003eHigh-Performance Aluminium Louvres UK: Design \u0026amp; Application\u003c\/h2\u003e\n\u003cp data-start=\"604\" data-end=\"777\"\u003eDesigned for strength, corrosion resistance and long service life, \u003cstrong data-start=\"671\" data-end=\"695\"\u003ealuminium louvres UK\u003c\/strong\u003e manufactured are a dependable option for both commercial and industrial projects.\u003c\/p\u003e\n\u003cp data-start=\"779\" data-end=\"954\"\u003eUsed across offices, schools, warehouses and residential developments, these \u003cstrong data-start=\"856\" data-end=\"879\"\u003eventilation louvres\u003c\/strong\u003e support consistent airflow while helping protect against wind-driven rain.\u003c\/p\u003e\n\u003ch3 data-start=\"956\" data-end=\"1006\"\u003eIndustrial Ventilation Louvers for Plant Rooms\u003c\/h3\u003e\n\u003cp data-start=\"1008\" data-end=\"1071\"\u003ePlant rooms and service areas demand robust airflow management.\u003c\/p\u003e\n\u003cp data-start=\"1073\" data-end=\"1198\"\u003e\u003cstrong data-start=\"1073\" data-end=\"1107\"\u003eVentilation louvers industrial\u003c\/strong\u003e grade are typically larger, stronger and designed to handle higher air volumes. Ideal for:\u003c\/p\u003e\n\u003cul data-start=\"1200\" data-end=\"1296\"\u003e\n\u003cli data-start=\"1200\" data-end=\"1227\"\u003e\n\u003cp data-start=\"1202\" data-end=\"1227\"\u003eHVAC intake and extract\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1228\" data-end=\"1244\"\u003e\n\u003cp data-start=\"1230\" data-end=\"1244\"\u003eData centres\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1245\" data-end=\"1267\"\u003e\n\u003cp data-start=\"1247\" data-end=\"1267\"\u003eRooftop enclosures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1268\" data-end=\"1296\"\u003e\n\u003cp data-start=\"1270\" data-end=\"1296\"\u003eManufacturing facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1298\" data-end=\"1434\"\u003eIf your system includes high-capacity equipment, selecting the correct blade profile and free area is essential for efficient operation.\u003c\/p\u003e\n\u003ch3 data-start=\"1436\" data-end=\"1489\"\u003eCustom Circular Louvres for Core-Drilled Openings\u003c\/h3\u003e\n\u003cp data-start=\"1491\" data-end=\"1548\"\u003eWorking with round ductwork or core-drilled penetrations?\u003c\/p\u003e\n\u003cp data-start=\"1550\" data-end=\"1738\"\u003e\u003ca href=\"https:\/\/www.efans.co.uk\/products\/igc-air-intake-louvre-circular\"\u003e\u003cstrong data-start=\"1550\" data-end=\"1570\"\u003eCircular louvres\u003c\/strong\u003e\u003c\/a\u003e offer a neat, purpose-built termination point. They’re commonly used for smaller extract systems or targeted ventilation runs where rectangular frames aren’t suitable.\u003c\/p\u003e\n\u003cp data-start=\"1740\" data-end=\"1827\"\u003ePractical, compact and easy to install, they integrate seamlessly with ducting systems.\u003c\/p\u003e\n\u003ch3 data-start=\"1829\" data-end=\"1887\"\u003eAluminium Ventilation Louvers for Doors and Partitions\u003c\/h3\u003e\n\u003cp data-start=\"1889\" data-end=\"1953\"\u003eAirflow isn’t always external. Internal ventilation matters too.\u003c\/p\u003e\n\u003cp data-start=\"1955\" data-end=\"2176\"\u003e\u003cstrong data-start=\"1955\" data-end=\"1988\"\u003eVentilation louvers for doors\u003c\/strong\u003e are often used in plant rooms, riser cupboards and utility spaces. These compact \u003cstrong data-start=\"2070\" data-end=\"2100\"\u003elouvre ventilation grilles\u003c\/strong\u003e allow air transfer while maintaining privacy and separation between spaces.\u003c\/p\u003e\n\u003cp data-start=\"2178\" data-end=\"2267\"\u003eThey’re a simple solution when passive airflow is required without mechanical adjustment.\u003c\/p\u003e\n\u003cp data-start=\"2178\" data-end=\"2267\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/Circular_weather_louvre.jpg?v=1649706460\" alt=\"Aluminium Circular Louvre With Mesh Screen - eFans Direct Ltd - Circular weather louvre -IGC\"\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"2274\" data-end=\"2342\"\u003eTechnical Specification: Louvre Ventilation Grilles \u0026amp; Performance\u003c\/h2\u003e\n\u003cp data-start=\"2344\" data-end=\"2460\"\u003eChoosing the right aluminium louvres for building ventilation goes beyond size and finish. Performance data matters.\u003c\/p\u003e\n\u003ch3 data-start=\"2462\" data-end=\"2532\"\u003eOptimising Airflow: Understanding Free Area in Ventilation Louvres\u003c\/h3\u003e\n\u003cp data-start=\"2534\" data-end=\"2602\"\u003eFree area refers to the unobstructed space through which air passes.\u003c\/p\u003e\n\u003cp data-start=\"2604\" data-end=\"2732\"\u003eHigher free area typically improves airflow efficiency. However, it must be balanced against blade depth and weather resistance.\u003c\/p\u003e\n\u003cp data-start=\"2734\" data-end=\"2790\"\u003eWhen reviewing \u003cstrong data-start=\"2749\" data-end=\"2779\"\u003eventilation louvers design\u003c\/strong\u003e, consider:\u003c\/p\u003e\n\u003cul data-start=\"2792\" data-end=\"2906\"\u003e\n\u003cli data-start=\"2792\" data-end=\"2816\"\u003e\n\u003cp data-start=\"2794\" data-end=\"2816\"\u003eFree area percentage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2817\" data-end=\"2834\"\u003e\n\u003cp data-start=\"2819\" data-end=\"2834\"\u003ePressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2835\" data-end=\"2866\"\u003e\n\u003cp data-start=\"2837\" data-end=\"2866\"\u003eAirflow volume requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2867\" data-end=\"2906\"\u003e\n\u003cp data-start=\"2869\" data-end=\"2906\"\u003eIntegration with mechanical systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2908\" data-end=\"2983\"\u003eCorrect specification ensures your ventilation system performs as intended.\u003c\/p\u003e\n\u003ch3 data-start=\"2985\" data-end=\"3040\"\u003eWeather Protection and Rain Defence Classifications\u003c\/h3\u003e\n\u003cp data-start=\"3042\" data-end=\"3131\"\u003eExternal aluminium louvres are often tested for water penetration and airflow resistance.\u003c\/p\u003e\n\u003cp data-start=\"3133\" data-end=\"3329\"\u003eRain defence classifications help determine how effectively the louvre prevents water ingress during wind-driven rain. For exposed façades or coastal projects, this becomes particularly important.\u003c\/p\u003e\n\u003cp data-start=\"3331\" data-end=\"3425\"\u003eSelecting the correct rating reduces maintenance issues and protects internal plant equipment.\u003c\/p\u003e\n\u003ch2 data-start=\"3432\" data-end=\"3496\"\u003eAluminium Louvres for Building Ventilation Cost \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp data-start=\"3498\" data-end=\"3540\"\u003eBudget is always part of the conversation.\u003c\/p\u003e\n\u003cp data-start=\"3542\" data-end=\"3754\"\u003eThe \u003cstrong data-start=\"3546\" data-end=\"3597\"\u003ealuminium louvres for building ventilation cost\u003c\/strong\u003e depends on size, blade type, finish and performance rating. Bespoke colours, larger units and higher weather classifications will influence overall pricing.\u003c\/p\u003e\n\u003cp data-start=\"3756\" data-end=\"3944\"\u003eIf you’re searching for \u003cem data-start=\"3780\" data-end=\"3832\"\u003ealuminium louvres for building ventilation near me\u003c\/em\u003e, consider both availability and technical suitability. The right specification avoids costly alterations later.\u003c\/p\u003e\n\u003ch3 data-start=\"3946\" data-end=\"4003\"\u003eEstimating Project Costs for Custom Aluminium Louvres\u003c\/h3\u003e\n\u003cp data-start=\"4005\" data-end=\"4042\"\u003eTo estimate costs accurately, gather:\u003c\/p\u003e\n\u003cul data-start=\"4044\" data-end=\"4146\"\u003e\n\u003cli data-start=\"4044\" data-end=\"4066\"\u003e\n\u003cp data-start=\"4046\" data-end=\"4066\"\u003eOpening dimensions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4067\" data-end=\"4089\"\u003e\n\u003cp data-start=\"4069\" data-end=\"4089\"\u003eRequired free area\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4090\" data-end=\"4122\"\u003e\n\u003cp data-start=\"4092\" data-end=\"4122\"\u003eDesired finish or RAL colour\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4123\" data-end=\"4146\"\u003e\n\u003cp data-start=\"4125\" data-end=\"4146\"\u003eInstallation method\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4148\" data-end=\"4230\"\u003eBulk orders for larger projects can help streamline procurement and improve value.\u003c\/p\u003e\n\u003ch2 data-start=\"4237\" data-end=\"4244\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-start=\"4246\" data-end=\"4351\"\u003e\u003cstrong data-start=\"4246\" data-end=\"4285\"\u003eHow much do aluminium louvres cost?\u003c\/strong\u003e\u003cbr data-start=\"4285\" data-end=\"4288\"\u003ePrices vary by size and specification; bespoke units cost more.\u003c\/p\u003e\n\u003cp data-start=\"4353\" data-end=\"4445\"\u003e\u003cstrong data-start=\"4353\" data-end=\"4399\"\u003eAre louvered windows good for ventilation?\u003c\/strong\u003e\u003cbr data-start=\"4399\" data-end=\"4402\"\u003eYes, they allow controlled natural airflow.\u003c\/p\u003e\n\u003cp data-start=\"4447\" data-end=\"4529\"\u003e\u003cstrong data-start=\"4447\" data-end=\"4482\"\u003eAre aluminum louvers expensive?\u003c\/strong\u003e\u003cbr data-start=\"4482\" data-end=\"4485\"\u003eCosts depend on size and performance rating.\u003c\/p\u003e\n\u003cp data-start=\"4531\" data-end=\"4620\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"4531\" data-end=\"4573\"\u003eAre Louvre doors good for ventilation?\u003c\/strong\u003e\u003cbr data-start=\"4573\" data-end=\"4576\"\u003eYes, they provide effective passive airflow.\u003c\/p\u003e\n\u003cp data-start=\"3812\" data-end=\"3898\"\u003e \u003c\/p\u003e","products":[{"product_id":"aluminium-square-weather-louvre-external","title":"Aluminium Square Weather Louvre External","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aluminium Square Weather Louvre External is a durable and stylish solution for managing ventilation and protecting external spaces. Engineered with a 38mm depth and a 45-degree fixed blade design, this weather louvre offers excellent resistance against rain, wind, and debris. Its aluminium construction ensures longevity and a sleek appearance, making it suitable for both residential and commercial applications.\u003c\/p\u003e\n\u003cp\u003eThe inclusion of bird mesh as standard provides additional protection, making it an ideal choice for those seeking a reliable external weather louvre. Perfect for enhancing airflow while safeguarding your space, this aluminium weather louvre is designed to withstand various weather conditions with ease.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDepth \u003cstrong\u003e38mm\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e90% Free Area\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e10 standard sizes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupply and extract weather louvre\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBird mesh fitted \u003c\/strong\u003eas standard\u003c\/li\u003e\n\u003cli\u003e45 degree fixed blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium\u003c\/strong\u003e material \u003c\/li\u003e\n\u003cli\u003eFinish \/Aluminium in Colour\u003c\/li\u003e\n\u003cli\u003eExternal applications\u003c\/li\u003e\n\u003cli\u003eGood protection against rain, wind, and debris\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cstrong\u003eNeed a special size or colour finish? We offer a \u003ca rel=\"noopener\" title=\"Made To Order Grilles \u0026amp; Louvres\" href=\"https:\/\/www.efans.co.uk\/pages\/made-to-order\" target=\"_blank\"\u003emade to order \u003c\/a\u003eservice.\u003cbr\u003e\u003c\/strong\u003eOur team can help. Call us on 0161 818 2050\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eManuals \u0026amp; Guides\u003c\/strong\u003e \u003cbr\u003e\u003ca rel=\"noopener\" title=\"Standard Weather Louvre Dimension Data Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Standard_Weather_Louvre_Sizes_WL38_Dimension_Data_Sheet_1.pdf?v=1711633684\" target=\"_blank\"\u003eStandard Weather Louvre Dimension Data Sheet\u003c\/a\u003e\u003cbr\u003e\u003ca title=\"Standard Weather Louvre Fitting Guide\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/guide-weather-louvre-fitting.pdf?v=1641382822\" target=\"_blank\"\u003eStandard Weather Louvre Fitting Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"eFans","offers":[{"title":"150mm x 150mm","offer_id":33592706629765,"sku":"53801","price":28.24,"currency_code":"GBP","in_stock":true},{"title":"200mm x 200mm","offer_id":33592695980165,"sku":"53802","price":29.55,"currency_code":"GBP","in_stock":true},{"title":"250mm x 250mm","offer_id":33573779570821,"sku":"53803","price":32.35,"currency_code":"GBP","in_stock":true},{"title":"300mm x 300mm","offer_id":33573779603589,"sku":"53804","price":43.92,"currency_code":"GBP","in_stock":true},{"title":"350mm x 350mm","offer_id":33573779636357,"sku":"53805","price":45.45,"currency_code":"GBP","in_stock":true},{"title":"400mm x 400mm","offer_id":33573779669125,"sku":"53806","price":61.99,"currency_code":"GBP","in_stock":true},{"title":"450mm x 450mm","offer_id":33573779701893,"sku":"53807","price":69.99,"currency_code":"GBP","in_stock":true},{"title":"500mm x 500mm","offer_id":33573779734661,"sku":"53808","price":73.99,"currency_code":"GBP","in_stock":true},{"title":"550mm x 550mm","offer_id":33573779767429,"sku":"53809","price":83.99,"currency_code":"GBP","in_stock":true},{"title":"600mm x 600mm","offer_id":33573779800197,"sku":"53810","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/weather-louvre-front.jpg?v=1770649583"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/collections\/Industrial_ventilation_louvres_aluminium.jpg?v=1771558986","url":"https:\/\/www.efans.co.uk\/collections\/aluminium-louvres-for-building-ventilation.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}