{"title":"Acoustic Louvres for Noise-Sensitive Environments","description":"\u003cp\u003eBattling plant noise, neighbour complaints, or echoing airflow? \u003cstrong data-start=\"64\" data-end=\"117\"\u003eAcoustic Louvres for Noise-Sensitive Environments\u003c\/strong\u003e are designed to keep ventilation working without letting sound escape. Used alongside \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/extractor-fans\"\u003e\u003cstrong data-start=\"204\" data-end=\"222\"\u003eExtractor Fans\u003c\/strong\u003e\u003c\/a\u003e, they strike the right balance between airflow, compliance, and the peace and quiet everyone’s hoping for.\u003c\/p\u003e\n\u003cp data-start=\"42\" data-end=\"416\"\u003eIn noise-sensitive spaces, ventilation can quickly become a balancing act. \u003cstrong data-start=\"117\" data-end=\"135\"\u003eExtractor Fans\u003c\/strong\u003e need airflow to perform, but unwanted sound can’t be allowed to travel with it. That’s where \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/weather-louvres\"\u003e\u003cstrong data-start=\"229\" data-end=\"282\"\u003eAcoustic Louvres for Noise-Sensitive Environments\u003c\/strong\u003e\u003c\/a\u003e come into play—designed to reduce noise transmission while maintaining effective ventilation for commercial and specialist buildings.\u003c\/p\u003e\n\u003cp data-start=\"418\" data-end=\"485\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/F4904G_b1df5764-bd9a-4db1-95fa-931a79e700e1.jpg?v=1702457374\" alt=\"Domus - Plastic Louvred Wall Grille with Flyscreen 150 Dia - eFans Direct Ltd\"\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"505\" data-end=\"562\"\u003eBest Acoustic Louvres for Noise-Sensitive Environments\u003c\/h2\u003e\n\u003cp data-start=\"564\" data-end=\"813\"\u003eNot all louvres are created equal. Standard ventilation louvres allow airflow but offer little acoustic control. Acoustic systems, however, are engineered with internal sound-absorbing infill to reduce noise transmission while maintaining free area.\u003c\/p\u003e\n\u003cp data-start=\"815\" data-end=\"961\"\u003eIdeal for commercial buildings, schools, hospitals and residential developments, these systems support compliance with environmental noise limits.\u003c\/p\u003e\n\u003ch3 data-start=\"963\" data-end=\"1024\"\u003eAcoustic Louvre Screens and Enclosures for External Plant\u003c\/h3\u003e\n\u003cp data-start=\"1026\" data-end=\"1151\"\u003eExternal plant is a common source of complaints. Rooftop condensers, chillers and generators can all create continuous noise.\u003c\/p\u003e\n\u003cp data-start=\"1153\" data-end=\"1200\"\u003eAcoustic louvre screens and enclosures provide:\u003c\/p\u003e\n\u003cul data-start=\"1202\" data-end=\"1287\"\u003e\n\u003cli data-start=\"1202\" data-end=\"1243\"\u003e\n\u003cp data-start=\"1204\" data-end=\"1243\"\u003eSound attenuation for plant equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1244\" data-end=\"1266\"\u003e\n\u003cp data-start=\"1246\" data-end=\"1266\"\u003eWeather protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1267\" data-end=\"1287\"\u003e\n\u003cp data-start=\"1269\" data-end=\"1287\"\u003eVisual screening\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1289\" data-end=\"1413\"\u003eThey’re often used to form full plant compounds, reducing noise impact at source while still allowing essential ventilation.\u003c\/p\u003e\n\u003ch3 data-start=\"1415\" data-end=\"1474\"\u003eContinuous Acoustic Louver Systems for Seamless Facades\u003c\/h3\u003e\n\u003cp data-start=\"1476\" data-end=\"1565\"\u003eFor large façades, continuous acoustic louvre systems create a clean, uniform appearance.\u003c\/p\u003e\n\u003cp data-start=\"1567\" data-end=\"1784\"\u003eThese systems are designed to integrate into curtain walling or cladding, providing uninterrupted airflow and consistent sound reduction across wide openings. Ideal where aesthetics and performance must work together.\u003c\/p\u003e\n\u003ch3 data-start=\"1786\" data-end=\"1851\"\u003eAcoustic Louver Panels: Single Bank vs. Double Bank Solutions\u003c\/h3\u003e\n\u003cp data-start=\"1853\" data-end=\"1942\"\u003eSingle bank acoustic louvre panels offer effective attenuation for moderate noise levels.\u003c\/p\u003e\n\u003cp data-start=\"1944\" data-end=\"2087\"\u003eDouble bank systems increase sound reduction by layering acoustic blades, making them suitable for more demanding sites. The choice depends on:\u003c\/p\u003e\n\u003cul data-start=\"2089\" data-end=\"2158\"\u003e\n\u003cli data-start=\"2089\" data-end=\"2119\"\u003e\n\u003cp data-start=\"2091\" data-end=\"2119\"\u003eRequired decibel reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2120\" data-end=\"2139\"\u003e\n\u003cp data-start=\"2122\" data-end=\"2139\"\u003eAvailable depth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2140\" data-end=\"2158\"\u003e\n\u003cp data-start=\"2142\" data-end=\"2158\"\u003eAirflow demand\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2160\" data-end=\"2247\"\u003eSelecting the right configuration ensures you don’t compromise ventilation for silence.\u003c\/p\u003e\n\u003ch2 data-start=\"418\" data-end=\"485\"\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\" style=\"font-size: 0.875rem;\"\u003e\u003c\/h2\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\n\u003ch2 data-start=\"2254\" data-end=\"2321\"\u003eTechnical Specification: Acoustic Louvre Free Area \u0026amp; Performance\u003c\/h2\u003e\n\u003cp data-start=\"2323\" data-end=\"2398\"\u003ePerformance data matters, especially when planning conditions are involved.\u003c\/p\u003e\n\u003ch3 data-start=\"2400\" data-end=\"2465\"\u003eBalancing Sound Transmission Loss with Aerodynamic Efficiency\u003c\/h3\u003e\n\u003cp data-start=\"2467\" data-end=\"2557\"\u003eAcoustic louvres are rated for sound transmission loss (STL) across different frequencies.\u003c\/p\u003e\n\u003cp data-start=\"2559\" data-end=\"2652\"\u003eHigher attenuation typically means deeper blades and reduced free area. The key is balancing:\u003c\/p\u003e\n\u003cul data-start=\"2654\" data-end=\"2756\"\u003e\n\u003cli data-start=\"2654\" data-end=\"2681\"\u003e\n\u003cp data-start=\"2656\" data-end=\"2681\"\u003eRequired airflow volume\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2682\" data-end=\"2706\"\u003e\n\u003cp data-start=\"2684\" data-end=\"2706\"\u003ePressure drop limits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2707\" data-end=\"2733\"\u003e\n\u003cp data-start=\"2709\" data-end=\"2733\"\u003eTarget noise reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2734\" data-end=\"2756\"\u003e\n\u003cp data-start=\"2736\" data-end=\"2756\"\u003eWeather resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2758\" data-end=\"2841\"\u003eA well-specified system reduces noise without placing strain on mechanical systems.\u003c\/p\u003e\n\u003ch2 data-start=\"2848\" data-end=\"2903\"\u003eHigh-Rise Compliance: Fire Rated Acoustic Louvres UK\u003c\/h2\u003e\n\u003cp data-start=\"2905\" data-end=\"3000\"\u003eIn multi-storey or high-rise buildings, acoustic control must align with fire safety standards.\u003c\/p\u003e\n\u003ch3 data-start=\"3002\" data-end=\"3060\"\u003eNon-Combustible Acoustic Louvres for Commercial Safety\u003c\/h3\u003e\n\u003cp data-start=\"3062\" data-end=\"3181\"\u003eFire rated acoustic louvres UK specified are manufactured using non-combustible materials to meet building regulations.\u003c\/p\u003e\n\u003cp data-start=\"3183\" data-end=\"3213\"\u003eThey’re commonly installed in:\u003c\/p\u003e\n\u003cp data-start=\"3217\" data-end=\"3250\"\u003eHigh-rise residential buildings\u003c\/p\u003e\n\u003cul data-start=\"3215\" data-end=\"3300\"\u003e\n\u003cli data-start=\"3251\" data-end=\"3273\"\u003e\n\u003cp data-start=\"3253\" data-end=\"3273\"\u003eCommercial offices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3274\" data-end=\"3300\"\u003e\n\u003cp data-start=\"3276\" data-end=\"3300\"\u003eMixed-use developments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3302\" data-end=\"3400\"\u003eCombining acoustic performance with fire compliance ensures both safety and comfort are addressed.\u003c\/p\u003e\n\u003ch2 data-start=\"3407\" data-end=\"3414\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-start=\"3416\" data-end=\"3502\"\u003e\u003cstrong data-start=\"3416\" data-end=\"3444\"\u003eDo louvers reduce noise?\u003c\/strong\u003e\u003cbr data-start=\"3444\" data-end=\"3447\"\u003eAcoustic louvres reduce noise; standard louvres do not.\u003c\/p\u003e\n\u003cp data-start=\"3504\" data-end=\"3591\"\u003e\u003cstrong data-start=\"3504\" data-end=\"3542\"\u003eWill acoustic panels reduce noise?\u003c\/strong\u003e\u003cbr data-start=\"3542\" data-end=\"3545\"\u003eYes, they absorb and reduce sound reflections.\u003c\/p\u003e\n\u003cp data-start=\"3593\" data-end=\"3700\"\u003e\u003cstrong data-start=\"3593\" data-end=\"3643\"\u003eHow to block low frequency noise from outside?\u003c\/strong\u003e\u003cbr data-start=\"3643\" data-end=\"3646\"\u003eUse mass, insulation and specialised acoustic systems.\u003c\/p\u003e\n\u003cp data-start=\"3702\" data-end=\"3804\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"3702\" data-end=\"3743\"\u003eHow to block outside sound in a room?\u003c\/strong\u003e\u003cbr data-start=\"3743\" data-end=\"3746\"\u003eSeal gaps, add insulation and use acoustic-rated products.\u003c\/p\u003e\n\u003c\/div\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\/F4904G_e9d4fc64-e853-4627-9c80-416af385461f.jpg?v=1771559426","url":"https:\/\/www.efans.co.uk\/collections\/acoustic-louvres-for-noise-sensitive-environments.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}