{"product_id":"sp-crvb4-500n-500mm-roof-mounted-ventilation-fan","title":"S\u0026P CRVB\/4-500N 500mm Roof-Mounted Ventilation Fan","description":"\n\u003cp\u003e\u003cstrong\u003eDiscover our range of centrifugal roof-mounted fans\u003c\/strong\u003e designed for optimal performance with a sleek vertical discharge format. These fans feature a \u003cstrong\u003every low profile design\u003c\/strong\u003e for discreet installation and are constructed with a \u003cstrong\u003egalvanised sheet steel base\u003c\/strong\u003e for durability.\u003c\/p\u003e\n\n\u003cp\u003eExperience \u003cstrong\u003ehigh efficiency\u003c\/strong\u003e with our centrifugal backward curved impeller, available in \u003cstrong\u003ehigh-strength black injection moulded plastic\u003c\/strong\u003e for models 225 and 250, or \u003cstrong\u003ealuminium sheet\u003c\/strong\u003e for sizes 280 to 355. Each unit is equipped with an \u003cstrong\u003eexternal rotor motor\u003c\/strong\u003e for enhanced performance.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003espun aluminium cowl\u003c\/strong\u003e ensures robust protection, while the \u003cstrong\u003eOn-Off isolator switch\u003c\/strong\u003e offers convenient control. Choose from models with \u003cstrong\u003e2, 4, or 6 poles\u003c\/strong\u003e to suit your needs.\u003c\/p\u003e\n\n\u003cp\u003eOur motors are designed for reliability: \u003cstrong\u003eSingle-phase external rotor motors\u003c\/strong\u003e (230V-50\/60Hz) are IP54 rated with class F thermal overload protection, while \u003cstrong\u003ethree-phase motors\u003c\/strong\u003e (230\/400V-50\/60Hz) offer speed control through frequency inverters and voltage adjustments.\u003c\/p\u003e\n\n\u003cp\u003eFor detailed specifications, refer to our \u003cstrong\u003eS\u0026amp;P CRVB Datasheet\u003c\/strong\u003e.\u003c\/p\u003e\n","brand":"Ducting Supplies","offers":[{"title":"Default Title","offer_id":52064961429846,"sku":"5136979100","price":2413.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/5703\/2022\/files\/CRVB.jpg?v=1765463719","url":"https:\/\/ductingsuppliesuk.com\/products\/sp-crvb4-500n-500mm-roof-mounted-ventilation-fan","provider":"Ducting Supplies","version":"1.0","type":"link"}