{"title":"Roof Ventilation","description":"\u003cp\u003eRoof access tricky? Plant rooms already bursting at the seams? \u003cstrong data-start=\"63\" data-end=\"99\"\u003eRoof-Mounted Heat Recovery Units\u003c\/strong\u003e solve both problems by delivering efficient ventilation without using internal space. Designed to work seamlessly with \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/extractor-fans\"\u003e\u003cstrong data-start=\"219\" data-end=\"237\"\u003eExtractor Fans\u003c\/strong\u003e\u003c\/a\u003e, they recover wasted heat, reduce energy bills and keep air quality high—whatever the weather.\u003c\/p\u003e\n\u003cp\u003eIf you’re looking at \u003ca href=\"https:\/\/www.efans.co.uk\/collections\/heat-recovery\/mounted_through-the-wall\"\u003e\u003cstrong data-end=\"41\" data-start=\"21\"\u003eRoof Ventilation\u003c\/strong\u003e\u003c\/a\u003e, you’re likely tackling condensation, damp or overheating in your loft space. Whether installed alongside \u003cstrong data-end=\"166\" data-start=\"148\"\u003eExtractor Fans\u003c\/strong\u003e or as part of a wider ventilation strategy, effective roof ventilation helps protect your property and maintain healthy airflow. From domestic upgrades to full \u003cstrong data-end=\"355\" data-start=\"327\"\u003eroof ventilation systems\u003c\/strong\u003e, this collection covers practical solutions built for \u003cstrong data-end=\"433\" data-start=\"410\"\u003eroof ventilation UK\u003c\/strong\u003e conditions.\u003ca href=\"https:\/\/www.efans.co.uk\/collections\/heat-recovery\/mounted_through-the-wall\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"588\" data-end=\"648\"\u003e\u003cimg style=\"font-size: 0.875rem; margin-bottom: 0px;\" alt=\"Roof-mounted heat recovery unit installed on a commercial building\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Roof-Mounted_Heat_Recovery_Unit_on_Commercial_Building.jpg?v=1769538305\"\u003e\u003c\/h2\u003e\n\u003ch2 data-end=\"499\" data-start=\"452\"\u003eHigh-Performance Roof Ventilation Systems UK\u003c\/h2\u003e\n\u003cp data-end=\"657\" data-start=\"501\"\u003eA well-designed roof ventilation system allows air to circulate through the roof space, reducing moisture build-up and extending the life of your structure.\u003c\/p\u003e\n\u003cp data-end=\"769\" data-start=\"659\"\u003eOur range includes both passive and mechanical solutions, suitable for retrofit projects and new builds alike.\u003c\/p\u003e\n\u003ch3 data-end=\"839\" data-start=\"771\"\u003eTile and Slate Roof Ventilation Panels for Retrofit \u0026amp; New Builds\u003c\/h3\u003e\n\u003cp data-end=\"937\" data-start=\"841\"\u003e\u003cstrong data-end=\"868\" data-start=\"841\"\u003eRoof ventilation panels\u003c\/strong\u003e are a simple, effective way to introduce airflow into pitched roofs.\u003c\/p\u003e\n\u003cp data-end=\"1067\" data-start=\"939\"\u003eDesigned to integrate with tile and slate coverings, they allow discreet ventilation without disrupting the roofline. Ideal for:\u003c\/p\u003e\n\u003cul data-end=\"1170\" data-start=\"1069\"\u003e\n\u003cli data-end=\"1089\" data-start=\"1069\"\u003e\n\u003cp data-end=\"1089\" data-start=\"1071\"\u003eLoft conversions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1113\" data-start=\"1090\"\u003e\n\u003cp data-end=\"1113\" data-start=\"1092\"\u003eRe-roofing projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1170\" data-start=\"1114\"\u003e\n\u003cp data-end=\"1170\" data-start=\"1116\"\u003eMeeting updated \u003ca href=\"https:\/\/www.efans.co.uk\/products\/elta-clearflow-cfht450-roof-fan-three-phase-ac-450mm\"\u003e\u003cstrong data-end=\"1168\" data-start=\"1132\"\u003eroof ventilation requirements UK\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1270\" data-start=\"1172\"\u003eThese systems support continuous airflow at eaves or high level, helping reduce condensation risk.\u003c\/p\u003e\n\u003ch3 data-end=\"1337\" data-start=\"1272\"\u003eMechanical Roof Ventilation Fans for High-Moisture Extraction\u003c\/h3\u003e\n\u003cp data-end=\"1404\" data-start=\"1339\"\u003eIn high-moisture environments, passive airflow may not be enough.\u003c\/p\u003e\n\u003cp data-end=\"1541\" data-start=\"1406\"\u003eA \u003cstrong data-end=\"1432\" data-start=\"1408\"\u003eroof ventilation fan\u003c\/strong\u003e actively extracts humid air from loft spaces, bathrooms or utility rooms. This is particularly useful where:\u003c\/p\u003e\n\u003cul data-end=\"1684\" data-start=\"1543\"\u003e\n\u003cli data-end=\"1595\" data-start=\"1543\"\u003e\n\u003cp data-end=\"1595\" data-start=\"1545\"\u003eInsulation upgrades have reduced natural airflow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1626\" data-start=\"1596\"\u003e\n\u003cp data-end=\"1626\" data-start=\"1598\"\u003eCondensation is persistent\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1684\" data-start=\"1627\"\u003e\n\u003cp data-end=\"1684\" data-start=\"1629\"\u003eAdditional extraction is required to meet regulations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1779\" data-start=\"1686\"\u003eMechanical options can be paired with ducting and humidity controls for improved performance.\u003c\/p\u003e\n\u003cp data-start=\"588\" data-end=\"648\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/S_P-th-mixvent.jpg?v=1727082289\" alt=\"S\u0026amp;P TH-500\/150 MIXVENT Roof Mounted Fan - 150mm\"\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"1834\" data-start=\"1786\"\u003eCompliance \u0026amp; Roof Ventilation Requirements UK\u003c\/h2\u003e\n\u003cp data-end=\"1920\" data-start=\"1836\"\u003eMeeting UK standards isn’t just best practice – it protects your property long term.\u003c\/p\u003e\n\u003ch3 data-end=\"1979\" data-start=\"1922\"\u003eUnderstanding BS 5250 and Building Regulations Part F\u003c\/h3\u003e\n\u003cp data-end=\"2108\" data-start=\"1981\"\u003eBS 5250 focuses on condensation control in buildings, while Part F of the Building Regulations covers ventilation requirements.\u003c\/p\u003e\n\u003cp data-end=\"2133\" data-start=\"2110\"\u003eTogether, they outline:\u003c\/p\u003e\n\u003cul data-end=\"2245\" data-start=\"2135\"\u003e\n\u003cli data-end=\"2160\" data-start=\"2135\"\u003e\n\u003cp data-end=\"2160\" data-start=\"2137\"\u003eMinimum airflow rates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2197\" data-start=\"2161\"\u003e\n\u003cp data-end=\"2197\" data-start=\"2163\"\u003eContinuous ventilation provision\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2245\" data-start=\"2198\"\u003e\n\u003cp data-end=\"2245\" data-start=\"2200\"\u003eStrategies to prevent moisture accumulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2355\" data-start=\"2247\"\u003eCorrectly specified \u003cstrong data-end=\"2295\" data-start=\"2267\"\u003eroof ventilation systems\u003c\/strong\u003e help ensure compliance while maintaining energy efficiency.\u003c\/p\u003e\n\u003ch3 data-end=\"2417\" data-start=\"2357\"\u003eCondensation Control: Cold Roof vs. Warm Roof Strategies\u003c\/h3\u003e\n\u003cp data-end=\"2527\" data-start=\"2419\"\u003eIn a cold roof (insulation at ceiling level), ventilation above insulation is essential to remove moist air.\u003c\/p\u003e\n\u003cp data-end=\"2671\" data-start=\"2529\"\u003eIn a warm roof (insulation at rafter level), ventilation strategies differ and may rely on vapour control layers and controlled airflow paths.\u003c\/p\u003e\n\u003cp data-end=\"2815\" data-start=\"2673\"\u003eUnderstanding the difference ensures you meet \u003cstrong data-end=\"2755\" data-start=\"2719\"\u003eroof ventilation requirements UK\u003c\/strong\u003e without over-ventilating or under-protecting the structure.\u003c\/p\u003e\n\u003ch2 data-end=\"2881\" data-start=\"2822\"\u003eProject Planning: Roof Ventilation Cost and Installation\u003c\/h2\u003e\n\u003cp data-end=\"2973\" data-start=\"2883\"\u003eThe \u003cstrong data-end=\"2912\" data-start=\"2887\"\u003eroof ventilation cost\u003c\/strong\u003e will depend on the type of system and scale of installation.\u003c\/p\u003e\n\u003cp data-end=\"3011\" data-start=\"2975\"\u003eFactors influencing pricing include:\u003c\/p\u003e\n\u003cul data-end=\"3125\" data-start=\"3013\"\u003e\n\u003cli data-end=\"3045\" data-start=\"3013\"\u003e\n\u003cp data-end=\"3045\" data-start=\"3015\"\u003eNumber of ventilation panels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3078\" data-start=\"3046\"\u003e\n\u003cp data-end=\"3078\" data-start=\"3048\"\u003eMechanical fan specification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3103\" data-start=\"3079\"\u003e\n\u003cp data-end=\"3103\" data-start=\"3081\"\u003eRoof type and access\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3125\" data-start=\"3104\"\u003e\n\u003cp data-end=\"3125\" data-start=\"3106\"\u003eLabour complexity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"3253\" data-start=\"3127\"\u003ePassive panel systems are generally more cost-effective, while mechanical extraction adds equipment and installation expenses.\u003c\/p\u003e\n\u003ch3 data-end=\"3318\" data-start=\"3255\"\u003eEstimating Roof Ventilation Cost: Material and Labour Guide\u003c\/h3\u003e\n\u003cp data-end=\"3351\" data-start=\"3320\"\u003eFor a rough estimate, consider:\u003c\/p\u003e\n\u003cul data-end=\"3482\" data-start=\"3353\"\u003e\n\u003cli data-end=\"3371\" data-start=\"3353\"\u003e\n\u003cp data-end=\"3371\" data-start=\"3355\"\u003eRoof size (m²)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3406\" data-start=\"3372\"\u003e\n\u003cp data-end=\"3406\" data-start=\"3374\"\u003eExisting ventilation provision\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3442\" data-start=\"3407\"\u003e\n\u003cp data-end=\"3442\" data-start=\"3409\"\u003eScaffold or access requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3482\" data-start=\"3443\"\u003e\n\u003cp data-end=\"3482\" data-start=\"3445\"\u003eElectrical work for mechanical fans\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"3562\" data-start=\"3484\"\u003eProper planning reduces installation time and helps avoid remedial work later.\u003c\/p\u003e\n\u003ch2 data-end=\"3576\" data-start=\"3569\"\u003eFAQs\u003c\/h2\u003e\n\u003cp data-end=\"3677\" data-start=\"3578\"\u003e\u003cstrong data-end=\"3610\" data-start=\"3578\"\u003eHow do you ventilate a roof?\u003c\/strong\u003e\u003cbr data-end=\"3613\" data-start=\"3610\"\u003eBy installing eaves, ridge, tile vents or mechanical extraction.\u003c\/p\u003e\n\u003cp data-end=\"3806\" data-start=\"3679\"\u003e\u003cstrong data-end=\"3730\" data-start=\"3679\"\u003eWhat are the four types of ventilation systems?\u003c\/strong\u003e\u003cbr data-end=\"3733\" data-start=\"3730\"\u003eNatural, mechanical extract, mechanical supply, and balanced ventilation.\u003c\/p\u003e\n\u003cp data-end=\"3906\" data-start=\"3808\"\u003e\u003cstrong data-end=\"3848\" data-start=\"3808\"\u003eDo you really need roof ventilation?\u003c\/strong\u003e\u003cbr data-end=\"3851\" data-start=\"3848\"\u003eYes, to control condensation and protect the structure.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"3994\" data-start=\"3908\"\u003e\u003cstrong data-end=\"3944\" data-start=\"3908\"\u003eWhat is roof ventilation called?\u003c\/strong\u003e\u003cbr data-end=\"3947\" data-start=\"3944\"\u003eOften referred to as attic or loft ventilation.\u003c\/p\u003e","products":[{"product_id":"systemair-raw-roof-cowl-1000","title":"Systemair RAW Roof Cowl 1000","description":"\u003cp\u003eThe Systemair RAW 1000 is a horizontal-discharge roof cowl moulded from UV-stabilised glass-reinforced polyester (GRP), so it is rigid, lightweight, corrosion-free and weather resistant. It comes complete with a bird guard.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHorizontal-discharge roof cowl\u003c\/li\u003e\n\u003cli\u003eUV-stabilised GRP: rigid, lightweight and corrosion-free\u003c\/li\u003e\n\u003cli\u003eBird guard included\u003c\/li\u003e\n\u003cli\u003eUse as a terminal or with an AW plate axial fan for powered extract or supply\u003c\/li\u003e\n\u003cli\u003eGoosewing grey (BS 00 A 05) as standard; any BS or RAL colour to order\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGeneral extract on factories, schools, kitchens, leisure and similar buildings\u003c\/li\u003e\n\u003cli\u003eRoof-mounted termination of extract or supply ductwork\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eCan be used purely as a terminal or combined with an AW plate axial fan to create a powered extract or supply unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAccessories available:\u003c\/strong\u003e a back-draught shutter (seals the cowl when the fan is off), a purlin box (forms a roof up-stand for the fan and cowl), and a soaker sheet (matches the profile of the existing roof).\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAW 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal-discharge roof cowl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuits size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUV-stabilised GRP (glass-reinforced polyester)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGoosewing grey (BS 00 A 05); any BS or RAL to order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBird guard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoof\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\u003cp\u003e\u003cstrong\u003eManuals \u0026amp; Guides\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_RAW_1000_Roof_Cowl_C_W_BG.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair RAW Roof Cowl 1000 Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35568776478876,"sku":"86551","price":2094.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/RAWRoofCowl_b536af20-4374-4380-8fde-c06de8e862cb.jpg?v=1598023374"},{"product_id":"elta-clearflow-cf315-roof-fan-single-phase-ac-315mm","title":"Elta Clearflow CF315 Roof Fan Single Phase AC - 315mm","description":"\u003cp\u003eThe Elta Clearflow CF315 is a 315mm vertical discharge centrifugal roof fan delivering airflow up to 1,987 m³\/h. Its backward curved impeller with three dimensional profiled blades provides high efficiency at the operating point with low noise.\u003c\/p\u003e\u003cp\u003ePowered by a single phase AC external rotor motor, it suits industrial, commercial kitchen, catering, hospital and bakery extract. The all metal pre-galvanised steel casing mounts at angles up to 30 degrees for direct fitting to pitched roofs, with a bird guard and wind guard fitted as standard.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 Phase\u003c\/li\u003e\n\u003cli\u003eAC motor\u003c\/li\u003e\n\u003cli\u003eUp to 1,987 m³\/h\u003c\/li\u003e\n\u003cli\u003eSpeed controllable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eElta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eClearflow CF315\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRoof fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e315mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax airflow\u003c\/td\u003e\n\u003ctd\u003e1,987 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase\u003c\/td\u003e\n\u003ctd\u003e1 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e188 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e220 to 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax temperature\u003c\/td\u003e\n\u003ctd\u003e60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e49 dBA at 3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Elta_Clearflow_Roof_Fan_Single_Phase_AC_Datasheet.pdf\" title=\"Elta Clearflow CF315 Roof Fan Datasheet\"\u003eElta Clearflow CF315 Roof Fan Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Elta","offers":[{"title":"Default Title","offer_id":47728358129985,"sku":"CF315\/4-1AC","price":972.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/CF315-4-1AC.jpg?v=1706785239"},{"product_id":"elta-clearflow-cfht350-roof-fan-three-phase-ac-350mm","title":"Elta Clearflow CFHT350 Roof Fan Three Phase AC - 350mm","description":"\u003cp\u003eThe Elta Clearflow CFHT350 is a 350mm high temperature rated vertical discharge centrifugal roof fan delivering airflow up to 2,196 m³\/h. Motors sit out of the air stream so it can handle clean, grease laden or contaminated air at temperatures up to 120°C.\u003c\/p\u003e\u003cp\u003ePowered by a three phase IP55 TEFC AC motor, it suits commercial kitchen, catering, industrial, bakery and foundry extract. The all metal pre-galvanised steel casing mounts at angles up to 15 degrees for direct fitting to pitched roofs, with a wind guard fitted as standard.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3 Phase\u003c\/li\u003e\n\u003cli\u003eAC motor\u003c\/li\u003e\n\u003cli\u003eUp to 2,196 m³\/h\u003c\/li\u003e\n\u003cli\u003eSpeed controllable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eElta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eClearflow CFHT350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRoof fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e350mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax airflow\u003c\/td\u003e\n\u003ctd\u003e2,196 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase\u003c\/td\u003e\n\u003ctd\u003e3 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e380 to 415V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax temperature\u003c\/td\u003e\n\u003ctd\u003e120°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e51 dBA at 3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Elta_Clearflow_Roof_Fan_Three_Phase_AC_Datasheet.pdf\" title=\"Elta Clearflow CFHT350 Roof Fan Datasheet\"\u003eElta Clearflow CFHT350 Roof Fan Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Elta","offers":[{"title":"Default Title","offer_id":47728719036737,"sku":"CFHT350\/4-3AC","price":1284.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/CFHT350-4-3AC.jpg?v=1706790269"},{"product_id":"vent-axia-qp100c-quiet-pack-box-fan-100mm","title":"Vent Axia QP100C Quiet Pack Box Fan - 100mm","description":"\u003cp\u003eThe Vent-Axia Quiet Pack QP100 is an in-line acoustic box fan for 100 mm ducting, delivering up to 216 m³\/h. An 'O' class acoustically-treated casing keeps duct and breakout noise to a minimum.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e'O' class acoustically-treated casing – minimum duct and breakout noise\u003c\/li\u003e\n\u003cli\u003eHigh-performance backward-curved centrifugal impeller\u003c\/li\u003e\n\u003cli\u003eSuitable for external pressures up to 500 Pa\u003c\/li\u003e\n\u003cli\u003eSpeed-controllable (auto-transformer recommended)\u003c\/li\u003e\n\u003cli\u003eRobust galvanised sheet steel casing\u003c\/li\u003e\n\u003cli\u003eFull range of matching accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNoise-sensitive commercial supply or extract ventilation\u003c\/li\u003e\n\u003cli\u003eIn-line duct installations in tough site conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eMount via drop rods or anti-vibration mounts. All sizes suit speed control by voltage-reduction auto-transformer for minimum noise. Should be installed on a suitable circuit by a qualified electrician.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVent-Axia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuiet Pack QP100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e216 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-phase AC, speed-controllable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImpeller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBackward-curved centrifugal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGalvanised steel, 'O' class acoustic foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-15°C to +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 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\/Vent_Axia_Quiet_Pack_Box_Fan_Datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eVent-Axia Quiet Pack QP100 Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Vent_Axia_Quiet_Pack_Box_Fan_Installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eVent-Axia Quiet Pack QP100 Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Vent-Axia","offers":[{"title":"Default Title","offer_id":47903706743105,"sku":"QP100C","price":512.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/QP100C.jpg?v=1709551129"},{"product_id":"s-p-crhb-4-225-n-roof-mounted-fan-225mm","title":"S\u0026P CRHB\/4-225 N Roof Mounted Fan - 225mm","description":"\u003cp\u003eThe S\u0026amp;P CRHB\/4-225N is a 225mm centrifugal roof mounted fan with horizontal discharge, moving up to 600 m³\/h. Its low profile galvanised steel base, backward curved impeller and spun aluminium cowl give quiet, efficient rooftop extraction.\u003c\/p\u003e\u003cp\u003eA single phase 230V AC external rotor motor drives the fan, speed controllable by voltage, with IP54 protection, Class F insulation and thermal overload as standard. It suits commercial kitchens, workshops, plant rooms and general building extract.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 Phase\u003c\/li\u003e\n\u003cli\u003eAC motor\u003c\/li\u003e\n\u003cli\u003eUp to 600 m³\/h\u003c\/li\u003e\n\u003cli\u003eSpeed controllable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eS\u0026amp;P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCRHB\/4-225N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRoof fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e225mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax airflow\u003c\/td\u003e\n\u003ctd\u003e600 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase\u003c\/td\u003e\n\u003ctd\u003e1 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge\u003c\/td\u003e\n\u003ctd\u003eHorizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e41W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e230V 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e36 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/S_P_CRHB-CRHT-CRVB-CRVT_Datasheet.pdf\" title=\"S\u0026amp;P CRHB CRHT CRVB CRVT Datasheet\"\u003eS\u0026amp;P CRHB CRHT CRVB CRVT Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"S\u0026P","offers":[{"title":"Default Title","offer_id":53478862389627,"sku":"5136911500","price":564.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/CRHB.jpg?v=1727086088"},{"product_id":"s-p-crvb-4-225n-roof-mounted-fan-225mm","title":"S\u0026P CRVB\/4-225N Roof Mounted Fan - 225mm","description":"\u003cp\u003eThe S\u0026amp;P CRVB\/4-225N is a 225mm centrifugal roof mounted fan with vertical discharge, moving up to 570 m³\/h. Its low profile galvanised steel base, backward curved impeller and spun aluminium cowl give quiet, efficient rooftop extraction.\u003c\/p\u003e\u003cp\u003eA single phase 230V AC external rotor motor drives the fan, speed controllable by voltage, with IP54 protection, Class F insulation and thermal overload as standard. It suits commercial kitchens, workshops, plant rooms and general building extract.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 Phase\u003c\/li\u003e\n\u003cli\u003eAC motor\u003c\/li\u003e\n\u003cli\u003eUp to 570 m³\/h\u003c\/li\u003e\n\u003cli\u003eSpeed controllable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eS\u0026amp;P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCRVB\/4-225N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRoof fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e225mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax airflow\u003c\/td\u003e\n\u003ctd\u003e570 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase\u003c\/td\u003e\n\u003ctd\u003e1 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge\u003c\/td\u003e\n\u003ctd\u003eVertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e41W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e230V 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e36 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/S_P_CRHB-CRHT-CRVB-CRVT_Datasheet.pdf\" title=\"S\u0026amp;P CRHB CRHT CRVB CRVT Datasheet\"\u003eS\u0026amp;P CRHB CRHT CRVB CRVT Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"S\u0026P","offers":[{"title":"Default Title","offer_id":53478940279163,"sku":"5136911600","price":569.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/CRVB.jpg?v=1727121499"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/collections\/Roof-Mounted_Heat_Recovery_Unit_on_Commercial_Building.jpg?v=1771568792","url":"https:\/\/www.efans.co.uk\/collections\/roof-ventilation.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}