{"title":"Commercial Weather Louvres","description":"\u003cp\u003eRain getting in, airflow dropping, or façades that just don’t look right? \u003cstrong data-start=\"74\" data-end=\"104\"\u003eCommercial Weather Louvres\u003c\/strong\u003e solve all three. Designed to work seamlessly with \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/extractor-fans\"\u003e\u003cstrong data-start=\"155\" data-end=\"173\"\u003eExtractor Fans\u003c\/strong\u003e\u003c\/a\u003e, they protect openings, maintain airflow, and keep buildings performing properly—whatever the UK weather decides to throw at them.\u003c\/p\u003e\n\u003cp data-start=\"42\" data-end=\"421\"\u003eWhen managing airflow in commercial buildings, the details matter. \u003cstrong data-start=\"109\" data-end=\"127\"\u003eExtractor Fans\u003c\/strong\u003e rely on properly specified external components to perform at their best, and that’s where \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/weather-louvres\"\u003e\u003cstrong data-start=\"218\" data-end=\"248\"\u003eCommercial Weather Louvres\u003c\/strong\u003e\u003c\/a\u003e come in. Designed to protect ventilation openings from wind, rain, and debris, they help maintain airflow while safeguarding the building envelope—no matter the conditions.\u003c\/p\u003e\n\u003cp data-start=\"423\" data-end=\"484\"\u003e\u003cimg alt=\"Aluminium Square Weather Louvre External - eFans Direct Ltd\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/weather-louvre-back.jpg?v=1770649583\"\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"443\" data-end=\"502\"\u003eHigh-Performance External Weather Louvres \u0026amp; Construction\u003c\/h2\u003e\n\u003cp data-start=\"504\" data-end=\"759\"\u003eExternal airflow points are exposed to the elements. That’s where \u003cstrong data-start=\"570\" data-end=\"597\"\u003eexternal weather louvre\u003c\/strong\u003e systems play a critical role. Designed to reduce water ingress while allowing consistent ventilation, they’re a key component in modern \u003cstrong data-start=\"734\" data-end=\"758\"\u003elouvres construction\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"761\" data-end=\"922\"\u003eWhether you’re upgrading an existing façade or specifying ventilation for a new build, our Commercial Weather Louvres combine durability with proven performance.\u003c\/p\u003e\n\u003ch3 data-start=\"924\" data-end=\"976\"\u003eLarge Commercial Weather Louvres for Plant Rooms\u003c\/h3\u003e\n\u003cp data-start=\"978\" data-end=\"1107\"\u003ePlant rooms require serious airflow. Boilers, chillers and air handling units all generate heat that needs controlled extraction.\u003c\/p\u003e\n\u003cp data-start=\"1109\" data-end=\"1160\"\u003e\u003cstrong data-start=\"1109\" data-end=\"1145\"\u003eLarge commercial weather louvres\u003c\/strong\u003e are ideal for:\u003c\/p\u003e\n\u003cul data-start=\"1162\" data-end=\"1252\"\u003e\n\u003cli data-start=\"1162\" data-end=\"1190\"\u003e\n\u003cp data-start=\"1164\" data-end=\"1190\"\u003eRooftop plant enclosures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1191\" data-end=\"1209\"\u003e\n\u003cp data-start=\"1193\" data-end=\"1209\"\u003eService risers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1210\" data-end=\"1226\"\u003e\n\u003cp data-start=\"1212\" data-end=\"1226\"\u003eData centres\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1227\" data-end=\"1252\"\u003e\n\u003cp data-start=\"1229\" data-end=\"1252\"\u003eIndustrial facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1254\" data-end=\"1471\"\u003eThey’re manufactured in robust aluminium or galvanised steel and sized to handle high-volume air movement. If airflow is the priority, selecting the correct blade profile and \u003cstrong data-start=\"1429\" data-end=\"1457\"\u003eweather louvre free area\u003c\/strong\u003e is essential.\u003c\/p\u003e\n\u003ch3 data-start=\"1473\" data-end=\"1519\"\u003eArchitectural Louvres and Bespoke Finishes\u003c\/h3\u003e\n\u003cp data-start=\"1521\" data-end=\"1567\"\u003eFunction is vital. But appearance matters too.\u003c\/p\u003e\n\u003cp data-start=\"1569\" data-end=\"1807\"\u003e\u003cstrong data-start=\"1569\" data-end=\"1594\"\u003eArchitectural louvres\u003c\/strong\u003e are designed to blend seamlessly with façades while maintaining ventilation performance. Powder-coated finishes, bespoke sizing and concealed fixings allow you to match design intent without compromising airflow.\u003c\/p\u003e\n\u003cp data-start=\"1809\" data-end=\"1892\"\u003eIdeal for commercial offices, schools and retail spaces where visual impact counts.\u003c\/p\u003e\n\u003ch3 data-start=\"1894\" data-end=\"1943\"\u003eSpecialist Circular Louvres for Round Ducting\u003c\/h3\u003e\n\u003cp data-start=\"1945\" data-end=\"2072\"\u003eWorking with round ductwork? Circular or spigot-mounted louvres provide a practical solution for terminating exposed duct runs.\u003c\/p\u003e\n\u003cp data-start=\"2074\" data-end=\"2236\"\u003eOften used with \u003cstrong data-start=\"2090\" data-end=\"2105\"\u003ehvc louvres\u003c\/strong\u003e or similar systems, they offer a neat finish while maintaining external weather protection. Simple, effective and easy to install.\u003c\/p\u003e\n\u003cdiv class=\"no-scrollbar flex min-h-36 flex-nowrap gap-0.5 overflow-auto sm:gap-1 sm:overflow-hidden xl:min-h-44 mt-1 mb-5 [\u0026amp;:not(:first-child)]:mt-4\"\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\/div\u003e\n\u003ch2 data-start=\"2243\" data-end=\"2309\"\u003eTechnical Specification: Weather Louvre Free Area \u0026amp; Performance\u003c\/h2\u003e\n\u003cp data-start=\"2311\" data-end=\"2368\"\u003ePerformance isn’t just about size. It’s about efficiency.\u003c\/p\u003e\n\u003ch3 data-start=\"2370\" data-end=\"2435\"\u003eUnderstanding Weather Louvre Free Area and Airflow Efficiency\u003c\/h3\u003e\n\u003cp data-start=\"2437\" data-end=\"2630\"\u003eThe \u003cstrong data-start=\"2441\" data-end=\"2469\"\u003eweather louvre free area\u003c\/strong\u003e refers to the open space through which air can pass. A higher free area typically means improved airflow, but blade design and rain defence ratings also matter.\u003c\/p\u003e\n\u003cp data-start=\"2632\" data-end=\"2684\"\u003eWhen selecting Commercial Weather Louvres, consider:\u003c\/p\u003e\n\u003cul data-start=\"2686\" data-end=\"2790\"\u003e\n\u003cli data-start=\"2686\" data-end=\"2710\"\u003e\n\u003cp data-start=\"2688\" data-end=\"2710\"\u003eFree area percentage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2711\" data-end=\"2733\"\u003e\n\u003cp data-start=\"2713\" data-end=\"2733\"\u003eAirflow resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2734\" data-end=\"2761\"\u003e\n\u003cp data-start=\"2736\" data-end=\"2761\"\u003eWater penetration class\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2762\" data-end=\"2790\"\u003e\n\u003cp data-start=\"2764\" data-end=\"2790\"\u003eWind loading performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2792\" data-end=\"2901\"\u003eBalancing these factors ensures your system supports airflow demands without compromising weather protection.\u003c\/p\u003e\n\u003ch2 data-start=\"2908\" data-end=\"2960\"\u003eLeading Brands: Gilberts, HVC, and Lindab Louvres\u003c\/h2\u003e\n\u003cp data-start=\"2962\" data-end=\"3086\"\u003eBrand reliability matters on commercial projects. That’s why many contractors and consultants look for proven manufacturers.\u003c\/p\u003e\n\u003ch3 data-start=\"3088\" data-end=\"3147\"\u003eGilberts and HVC Louvres: Professional Air Distribution\u003c\/h3\u003e\n\u003cp data-start=\"3149\" data-end=\"3383\"\u003e\u003cstrong data-start=\"3149\" data-end=\"3169\"\u003eGilberts louvres\u003c\/strong\u003e and \u003cstrong data-start=\"3174\" data-end=\"3189\"\u003ehvc louvres\u003c\/strong\u003e are widely specified in commercial developments. Known for consistent performance and compliant testing standards, they’re suitable for schools, healthcare settings and industrial applications.\u003c\/p\u003e\n\u003cp data-start=\"3385\" data-end=\"3489\"\u003eThey offer a range of blade profiles, performance classes and custom sizes to suit project requirements.\u003c\/p\u003e\n\u003ch3 data-start=\"3491\" data-end=\"3544\"\u003eLindab Louvres for Commercial Ventilation Systems\u003c\/h3\u003e\n\u003cp data-start=\"3546\" data-end=\"3764\"\u003e\u003cstrong data-start=\"3546\" data-end=\"3564\"\u003eLindab louvres\u003c\/strong\u003e integrate seamlessly with broader ducting and ventilation systems. Designed for efficiency and ease of installation, they’re well suited to modern commercial builds where system compatibility is key.\u003c\/p\u003e\n\u003cp data-start=\"3766\" data-end=\"3897\"\u003eIf you’re coordinating full ventilation packages, choosing compatible components simplifies installation and long-term maintenance.\u003c\/p\u003e\n\u003ch2 data-start=\"3904\" data-end=\"3911\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-start=\"3913\" data-end=\"4017\"\u003e\u003cstrong data-start=\"3913\" data-end=\"3948\"\u003eWhat is a weather rated louvre?\u003c\/strong\u003e\u003cbr data-start=\"3948\" data-end=\"3951\"\u003eA louvre tested to resist wind-driven rain while allowing airflow.\u003c\/p\u003e\n\u003cp data-start=\"4019\" data-end=\"4146\"\u003e\u003cstrong data-start=\"4019\" data-end=\"4063\"\u003eWhat are the different types of louvres?\u003c\/strong\u003e\u003cbr data-start=\"4063\" data-end=\"4066\"\u003eWeather louvres, acoustic louvres, architectural louvres and fire-rated louvres.\u003c\/p\u003e\n\u003cp data-start=\"4148\" data-end=\"4242\"\u003e\u003cstrong data-start=\"4148\" data-end=\"4178\"\u003eCan louvres be fire rated?\u003c\/strong\u003e\u003cbr data-start=\"4178\" data-end=\"4181\"\u003eYes, specific models are designed to provide fire resistance.\u003c\/p\u003e\n\u003cp data-start=\"4244\" data-end=\"4349\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"4244\" data-end=\"4282\"\u003eDo aluminium louvres attract heat?\u003c\/strong\u003e\u003cbr data-start=\"4282\" data-end=\"4285\"\u003eThey absorb some heat, but reflective finishes reduce heat gain.\u003c\/p\u003e\n\u003cp data-start=\"3277\" data-end=\"3376\"\u003e \u003c\/p\u003e","products":[{"product_id":"aluminium-square-weather-louvre-external","title":"Aluminium Square Weather Louvre External","description":"\u003cp\u003eThe Aluminium Square Weather Louvre is a durable external louvre for supply and extract ventilation, with a 45 degree fixed-blade design that resists rain, wind and debris. It is 38mm deep, has a 90% free area, and comes with a bird mesh fitted as standard.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e38mm depth\u003c\/li\u003e\n\u003cli\u003e90% free area\u003c\/li\u003e\n\u003cli\u003eAvailable in 10 standard sizes\u003c\/li\u003e\n\u003cli\u003eSupply and extract weather louvre\u003c\/li\u003e\n\u003cli\u003eBird mesh fitted as standard\u003c\/li\u003e\n\u003cli\u003e45 degree fixed blade\u003c\/li\u003e\n\u003cli\u003eAluminium construction, natural aluminium finish\u003c\/li\u003e\n\u003cli\u003eGood protection against rain, wind and debris\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eExternal supply and extract ventilation\u003c\/li\u003e\n\u003cli\u003eResidential and commercial louvre applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eFixes into the wall aperture. The 45 degree fixed blades and bird mesh protect the opening from rain, wind, debris and birds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed a special size or colour finish? We offer a made-to-order service. Our team can help, call us on 0161 818 2050.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSquare weather louvre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 to 600mm (10 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45° fixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBird mesh\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFitted as standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal, supply and extract\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManuals \u0026amp; Guides\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Standard_Weather_Louvre_Sizes_WL38_Dimension_Data_Sheet_1.pdf\" target=\"_blank\" rel=\"noopener\"\u003eStandard Weather Louvre Dimension Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/guide-weather-louvre-fitting.pdf\" target=\"_blank\" rel=\"noopener\"\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\/External_weather_louvre_protecting_ventilation_opening_on_commercial_property.jpg?v=1771558848","url":"https:\/\/www.efans.co.uk\/collections\/commercial-weather-louvres.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}