{"title":"Ventilation Louvres with Increased Water Resistance (EWR)","description":"\u003cp\u003eVentilation louvres with  increased water resistance (EWR) are essential components for buildings in environments where moisture control is critical. These louvres are expertly designed to prevent water ingress while allowing optimal airflow, making them ideal for applications in coastal areas, industrial settings, and regions prone to heavy rainfall. The unique design features specialized blade angles and drainage systems that effectively divert rainwater, ensuring that only clean, dry air enters the building.\u003c\/p\u003e\n\u003cp\u003eThese louvres are built to withstand harsh weather conditions while providing long-lasting performance. The increased water resistance (EWR) feature adds an additional layer of protection, making these louvres suitable for extreme environments and applications where moisture levels need to be meticulously controlled.\u003c\/p\u003e\n\u003cp\u003eVentilation louvres with EWR capabilities not only enhance indoor air quality but also contribute to energy efficiency by reducing the risk of dampness and mould growth. By combining efficiency with protection against the elements, ventilation louvres with high and increased water resistance provide a comprehensive solution for maintaining a safe and comfortable indoor environment.\u003c\/p\u003e","products":[{"product_id":"brl34z-fl-ewr","title":"BRL34Z-FL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe BRL34Z-FL EWR Extreme Water-Resistant Flanged Wall Louvre is designed to provide effective ventilation while offering enhanced resistance to water ingress in exposed environments. Featuring a 34 mm Z-blade design, this aluminium wall louvre is suitable for ventilation applications where protection against wind-driven rain is an important consideration.\u003c\/p\u003e\n\u003cp\u003eManufactured from high-quality extruded aluminium profiles, the BRL34Z-FL EWR uses EN AW-6060 T66 aluminium (AlMgSi0.5 F22) and incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. This combination provides a durable construction and helps prevent insects from entering through the ventilation opening.\u003c\/p\u003e\n\u003cp\u003eThe EWR design is intended for installations requiring increased resistance to water penetration compared with standard ventilation louvres. Its integrated flange provides a practical mounting arrangement for installation over a suitable wall opening.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929650090369,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR34Z-FL-EXTREME-WATER-RESISTANT.png?v=1761827521"},{"product_id":"brl50z-fl-ewr","title":"BRL50Z-FL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe BRL50Z-FL EWR Extreme Water-Resistant Flanged Wall Louvre is designed to provide effective ventilation while offering enhanced resistance to water ingress in exposed environments. Featuring a 50 mm Z-blade design, this robust aluminium louvre is suitable for applications where ventilation must be balanced with protection against wind-driven rain.\u003c\/p\u003e\n\u003cp\u003eManufactured from high-quality extruded aluminium profiles, the BRL50Z-FL EWR uses EN AW-6060 T66 aluminium (AlMgSi0.5 F22) and incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. This durable construction makes it suitable for demanding commercial and industrial ventilation projects.\u003c\/p\u003e\n\u003cp\u003eThe louvre's EWR design provides increased water resistance compared with standard ventilation louvres. Its integrated mounting flange allows it to be installed over a suitable wall opening, providing a practical solution for external air intake and exhaust applications where weather exposure is a key consideration.\u003c\/p\u003e\n\u003cp\u003eWith a 24% visual free area and 16% physical free area, the BRL50Z-FL EWR is designed to support ventilation requirements where resistance to water ingress is prioritised. It is available in a range of dimensions, with bespoke sizes available on request.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929650155905,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR60Z-FL-EXTREME-WATER-RESISTANT.png?v=1761827526"},{"product_id":"brl60z-fl-ewr","title":"BRL60Z-FL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe BRL60Z-FL EWR Extreme Water-Resistant Flanged Wall Louvre is designed to provide reliable ventilation while offering increased resistance to water ingress in exposed environments. Featuring a 60 mm Z-blade design, this robust aluminium louvre is suitable for commercial, industrial and building-services applications where effective airflow and protection against wind-driven rain are important considerations.\u003c\/p\u003e\n\u003cp\u003eManufactured from high-quality extruded aluminium profiles, the BRL60Z-FL EWR uses EN AW-6060 T66 aluminium (AlMgSi0.5 F22) and incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. This combination provides a durable construction, while the mesh helps reduce insect ingress through the ventilation opening.\u003c\/p\u003e\n\u003cp\u003eThe louvre's increased water-resistance design makes it suitable for installations where weather exposure needs careful consideration. Its integrated flange provides a practical mounting arrangement for fitting over a suitable wall opening.\u003c\/p\u003e\n\u003cp\u003eWith a 40% visual free area and 33% physical free area, the BRL60Z-FL EWR offers a balance between ventilation performance and resistance to water penetration. Available in a wide range of dimensions, it can be specified for different project requirements, with bespoke sizes available on request.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929650221441,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR60Z-FL-EXTREME-WATER-RESISTANT-1.png?v=1761827532"},{"product_id":"brl65z-fl-ewr","title":"BRL65Z-FL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe BRL65Z-FL EWR Extreme Water-Resistant Flanged Wall Louvre is designed to provide ventilation while offering enhanced resistance to water ingress in exposed environments. Featuring a 65 mm Z-blade design, this robust aluminium louvre is suitable for commercial, industrial and building-services applications where protection against wind-driven rain is an important consideration.\u003c\/p\u003e\n\u003cp\u003eManufactured from high-quality extruded aluminium profiles, the BRL65Z-FL EWR uses EN AW-6060 T66 aluminium (AlMgSi0.5 F22) and incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. This combination provides a durable construction, while the mesh helps reduce insect ingress through the ventilation opening.\u003c\/p\u003e\n\u003cp\u003eDesigned for flanged wall installation, the BRL65Z-FL EWR can be fitted into a suitable external wall opening. Its increased water-resistance design makes it a practical choice for ventilation systems exposed to challenging weather conditions.\u003c\/p\u003e\n\u003cp\u003eWith a 31% visual free area and 14% physical free area, this model prioritises water resistance while providing a defined airflow passage. It is available in a wide range of dimensions, with bespoke sizes available on request.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929656775041,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR65Z-FL-EXTREME-WATER-RESISTANT.png?v=1761827426"},{"product_id":"brl75z-fl-ewr","title":"BRL75Z-FL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eThe \u003c\/span\u003eBrookvent BRL75Z-FL EWR\u003cspan\u003e is a high-performance aluminium ventilation louvre designed to provide effective air intake and exhaust while offering increased resistance to water ingress. Featuring a 75 mm Z-profile blade design, it is suitable for external wall ventilation applications where airflow must be balanced with protection against adverse weather conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from extruded aluminium profiles and fitted with stainless steel mesh, the BRL75Z-FL EWR provides a durable solution for commercial, industrial and building-services ventilation systems. Its integrated mounting flange supports installation into compatible wall openings, creating a neat, practical external finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe EWR (Enhanced Water Resistance) configuration is intended for applications where improved protection against rain penetration is an important design consideration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 300 x 300 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929656938881,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR75Z-FL-EXTREME-WATER-RESISTANT.png?v=1761827432"},{"product_id":"brl34z-gl-ewr","title":"BRL34Z-GL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe Brookvent BRL34Z-GL EWR is a glazed-in aluminium ventilation louvre designed to provide effective airflow while offering increased resistance to water penetration. Featuring a 34 mm Z-profile blade design, it is suitable for integration into compatible glazing systems where ventilation performance and weather protection are important considerations.\u003c\/p\u003e\n\u003cp\u003eThe BRL34Z-GL EWR offers a visual free area of 29% and a physical free area of 21%\u003cspan\u003e, providing useful airflow-related specifications for ventilation planning and product selection. The visual free area represents the apparent open area when viewed from the front, while the physical free area indicates the effective open area available for air to pass through the louvre. Actual airflow performance will also depend on factors such as pressure drop, installation conditions and the wider ventilation system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from extruded aluminium profiles and incorporating AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures, the louvre provides a durable solution for commercial, industrial and building-services applications. Its increased water-resistance design makes it suitable for external ventilation openings where reducing rainwater ingress is an important consideration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for glazed-in installation within a compatible glazing pocket using suitable glazing beads and packers, the BRL34Z-GL EWR provides an integrated finish for appropriate window and façade systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929657069953,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR34Z-GL-24-EXTREME-WATER-RESISTANT.png?v=1761827439"},{"product_id":"brl50z-gl-ewr","title":"BRL50Z-GL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe Brookvent BRL50Z-GL EWR is a glazed-in aluminium ventilation louvre designed to provide airflow while offering increased resistance to water penetration. Featuring a 50 mm Z-profile blade design, it is suitable for integration into compatible window, door and façade glazing systems where ventilation and weather protection are important considerations.\u003c\/p\u003e\n\u003cp\u003eThe BRL50Z-GL EWR offers a visual free area of 24% and a physical free area of 16%. The visual free area represents the apparent open area when viewed from the front, while the physical free area indicates the effective open area available for air to pass through the louvre. These values are useful when assessing ventilation openings and comparing product configurations. Actual airflow performance will also depend on pressure drop and the design of the wider ventilation system.\u003c\/p\u003e\n\u003cp\u003eManufactured from extruded aluminium profiles and fitted with AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures, the louvre provides a durable solution for commercial, industrial and building-services applications. Its EWR (Extreme Water Resistant) design is intended for external ventilation openings where reducing rainwater ingress is a key requirement.\u003c\/p\u003e\n\u003cp\u003eDesigned for installation within a compatible glazing pocket using suitable glazing beads and packers, the BRL50Z-GL EWR offers an integrated finish for appropriate glazed building systems.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e \u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929657233793,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR50Z-GL-24-EXTREME-WATER-RESISTANT.png?v=1761827445"},{"product_id":"brl60z-gl-ewr","title":"BRL60Z-GL EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe Brookvent BRL60Z-GL EWR is a glazed-in aluminium ventilation louvre designed to provide effective airflow while offering increased resistance to water penetration. Featuring a 60 mm Z-profile blade design, it is suitable for integration into compatible glazing systems where ventilation performance and protection against rainwater ingress are important considerations.\u003c\/p\u003e\n\u003cp\u003eThe BRL60Z-GL EWR provides a visual free area of 40% and a physical free area of 33%\u003cspan\u003e. The visual free area represents the apparent open proportion of the louvre when viewed from the front, while the physical free area indicates the effective open area available for air to pass through. These values help with product comparison and ventilation planning. Actual airflow will also depend on pressure drop, the dimensions of the installation and the wider ventilation system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from extruded aluminium profiles using EN AW-6060 T66 aluminium alloy, the louvre incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. Its EWR (Extreme Water Resistant) configuration is designed for external ventilation openings where increased resistance to water ingress is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for installation within a compatible glazing pocket using suitable glazing beads and packers, the BRL60Z-GL EWR offers an integrated finish for appropriate window and façade systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929657397633,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR60Z-GL-24-EXTREME-WATER-RESISTANT.png?v=1761827451"},{"product_id":"brl34z-sm-ewr","title":"BRL34Z-SM EWR","description":"\u003cp data-pm-slice=\"1 1 []\"\u003eThe Brookvent BRL34Z-SM EWR is a surface-mounted aluminium ventilation louvre designed to provide effective airflow while offering increased resistance to water penetration. Featuring a 34 mm Z-profile blade design, it is suitable for external wall applications where ventilation performance and protection against rainwater ingress are important considerations.\u003c\/p\u003e\n\u003cp\u003eThe BRL34Z-SM EWR provides a visual free area of 29% and a physical free area of 21%. The visual free area represents the apparent open proportion of the louvre when viewed from the front, while the physical free area indicates the effective open area available for air to pass through. These values help with product comparison and ventilation planning. Actual airflow will also depend on pressure drop, installation dimensions and the design of the wider ventilation system.\u003c\/p\u003e\n\u003cp\u003eManufactured from extruded aluminium profiles using EN AW-6060 T66 aluminium alloy, the louvre incorporates AISI 304 stainless steel mesh with 2.3 × 2.3 mm apertures. Its EWR (Extreme Water Resistant) design is intended for external ventilation openings where improved resistance to water ingress is required.\u003c\/p\u003e\n\u003cp\u003eDesigned for direct surface mounting onto a compatible wall or façade, the BRL34Z-SM EWR provides a practical finish for air intake and exhaust openings in commercial, industrial and building-services applications\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e \u003cbr\u003e\u003cstrong\u003eDIMENSIONS\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMin. dimension (height x width): 200 x 200 mm\u003cbr\u003e\u003cbr\u003eMax. dimension (height x width): 2000 x 4000 mm\u003cbr\u003e\u003cbr\u003eOther dimensions on request\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":54929657495937,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/files\/MR34Z-SM-EXTREME-WATER-RESISTANT.png?v=1761827457"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/8831\/3985\/collections\/MR75Z-FL-EXTREME-WATER-RESISTANT.webp?v=1769165473","url":"https:\/\/brookvent.co.uk\/collections\/ventilation-louvers-with-high-hwr-and-increased-water-resistance-ewr.oembed","provider":"Brookvent","version":"1.0","type":"link"}