{"product_id":"twinflow-stdl","title":"Elta Twinflow STDL","description":"\u003ch2\u003eElta Twinflow STDL Centrifugal Box Fan\u003c\/h2\u003e\n\u003cp\u003eThe Elta Twinflow STDL is a robust centrifugal box fan range built for dependable commercial ventilation where uptime matters. With twin fan operation and a factory fitted Auto Changeover Panel, it automatically switches to the standby fan on fault and can duty share to extend motor life. It is a strong choice for toilets, schools, offices, industrial units and similar applications where you want steady airflow with controlled noise.\u003c\/p\u003e\n\u003ch3\u003eWhy the Twinflow STDL works so well on site\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwin fan resilience:\u003c\/strong\u003e duty and standby operation with automatic changeover for continuity of ventilation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient EC performance:\u003c\/strong\u003e EC external rotor motors with smooth speed control plus low specific fan powers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower breakout noise:\u003c\/strong\u003e acoustically lined casing helps reduce noise escape into plant areas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong build quality:\u003c\/strong\u003e 1.2 mm galvanised steel casing with integral motor mounting plates for added rigidity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical range:\u003c\/strong\u003e 7 standard sizes from 125 mm to 500 mm with flow rates up to 1.740 m³\/s and static pressures up to 730 Pa\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature capability:\u003c\/strong\u003e suitable for operating temperatures up to 60°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance and airflow control\u003c\/h3\u003e\n\u003cp\u003eThe STDL range uses backward curved centrifugal impellers designed for efficient airflow with reduced tonal noise. The redesigned casing supports smoother airflow and improved efficiency. Integrated commissioning control enables simple set up on site, including single speed selection plus the ability to cap maximum speed where required. EC motors also support precise speed regulation via an external controller or building management system, helping you dial in performance to match the duty.\u003c\/p\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eToilets and washrooms\u003c\/li\u003e\n\u003cli\u003eHotels\u003c\/li\u003e\n\u003cli\u003eSchools, colleges and libraries\u003c\/li\u003e\n\u003cli\u003eKitchens\u003c\/li\u003e\n\u003cli\u003eFactories, industrial units and warehousing\u003c\/li\u003e\n\u003cli\u003eOffices and commercial spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e designed for horizontal mounting and external installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct connection:\u003c\/strong\u003e long spigots suit standard circular ducting, rectangular spigot options can be specified on request\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess:\u003c\/strong\u003e allow space for inspection and service access\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical safety:\u003c\/strong\u003e install and commission using qualified personnel in line with applicable regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance in plain English\u003c\/h3\u003e\n\u003cp\u003ePlan for routine inspection at least annually in line with site conditions. Typical tasks include checking fixings, inspecting mounts, keeping the impeller and internal surfaces clean and confirming correct operation of the changeover arrangement. The motor bearings are sealed for life which helps reduce routine servicing, but good access and periodic checks will protect performance long term.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing the correct size?\u003c\/strong\u003e Share your duct diameter, target airflow, available static pressure and operating temperature and we will help you match the right STDL model for the duty.\u003c\/p\u003e\n\u003cdiv class=\"product-description\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/download-datasheets-banner.png?v=1760521797\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.4379%;\"\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/Twinflow-STDL.pdf?v=1770323076\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/pdf-download-icon.png?v=1760521798\" alt=\"\"\u003e\u003c\/a\u003e\u003ca title=\"ODE Starflex Loft Roll (100mm \u0026amp; 200mm)\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4151\/5237\/files\/Acoustic_Mat_1.pdf?v=1709633062\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4151\/5237\/files\/epd-certificate-glasswool-44_1.pdf?v=1709632546\" title=\"Lunaflex Ductwrap Data Sheet\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4151\/5237\/files\/ODE_Duct-wrap_Datasheet.pdf?v=1709630634\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 78.1023%;\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong data-start=\"3636\" data-end=\"3685\"\u003eProduct Data, Performance and Dimension Sheet\u003c\/strong\u003e\u003cbr data-start=\"3685\" data-end=\"3688\"\u003eFull performance curves, airflow and pressure data, specific fan power figures, sound data, dimensions, weights and accessory options for the Twinflow STDL range. Click here to download the full product data sheet. \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/Twinflow-STDL.pdf?v=1770323076\"\u003e\u003cstrong\u003eClick here to download the full data, performance and dimension sheet.\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.4379%;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/Twinflow-STDL-IM-1.pdf?v=1770323076\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/pdf-download-icon.png?v=1760521798\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.1023%;\"\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong data-end=\"3948\" data-start=\"3904\"\u003eInstallation, Maintenance and User Guide\u003c\/strong\u003e\u003cbr data-end=\"3951\" data-start=\"3948\"\u003eGuidance on safe installation, electrical connection, commissioning controls and routine maintenance checks for the Twinflow STDL. Includes practical servicing advice to keep performance consistent over time. Click here to download the full installation, maintenance and user guide. \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/Twinflow-STDL-IM-1.pdf?v=1770323076\"\u003e\u003cstrong\u003eClick here to download the full installation, maintenance and user guide.\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eLooking to specify or purchase?\u003c\/strong\u003e \u003ca href=\"https:\/\/buyventilation.co.uk\/collections\/heat-recovery-units\"\u003e\u003cstrong\u003eExplore our full range of heat recovery ventilation units\u003c\/strong\u003e\u003c\/a\u003e or contact Buy Ventilation for expert guidance on selecting the right system for your project.\u003c\/p\u003e\n\u003c!-- Sources: :contentReference[oaicite:0]{index=0} --\u003e","brand":"BuyVentilation","offers":[{"title":"100mm \/ EC Single Phase Circular Spigot","offer_id":56315732623746,"sku":null,"price":1053.95,"currency_code":"GBP","in_stock":false},{"title":"100mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029128066,"sku":null,"price":1053.95,"currency_code":"GBP","in_stock":false},{"title":"125mm \/ EC Single Phase Circular Spigot","offer_id":56462008254850,"sku":null,"price":1367.65,"currency_code":"GBP","in_stock":true},{"title":"125mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029160834,"sku":null,"price":1395.7,"currency_code":"GBP","in_stock":true},{"title":"150mm \/ EC Single Phase Circular Spigot","offer_id":56462008287618,"sku":null,"price":1507.9,"currency_code":"GBP","in_stock":true},{"title":"150mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029193602,"sku":null,"price":1536.8,"currency_code":"GBP","in_stock":true},{"title":"150mm \/ EC Three Phase Rectangular Spigot","offer_id":56462029226370,"sku":null,"price":1053.95,"currency_code":"GBP","in_stock":false},{"title":"200mm \/ EC Single Phase Circular Spigot","offer_id":56462008320386,"sku":null,"price":1608.2,"currency_code":"GBP","in_stock":true},{"title":"200mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029259138,"sku":null,"price":1641.35,"currency_code":"GBP","in_stock":true},{"title":"250mm \/ EC Single Phase Circular Spigot","offer_id":56462008353154,"sku":null,"price":1636.25,"currency_code":"GBP","in_stock":true},{"title":"250mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029291906,"sku":null,"price":1678.75,"currency_code":"GBP","in_stock":true},{"title":"315mm \/ EC Single Phase Circular Spigot","offer_id":56462008385922,"sku":null,"price":2357.05,"currency_code":"GBP","in_stock":true},{"title":"315mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029324674,"sku":null,"price":2400.4,"currency_code":"GBP","in_stock":true},{"title":"400mm \/ EC Single Phase Circular Spigot","offer_id":56462008418690,"sku":null,"price":3278.45,"currency_code":"GBP","in_stock":true},{"title":"400mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029357442,"sku":null,"price":3286.1,"currency_code":"GBP","in_stock":true},{"title":"500mm \/ EC Single Phase Circular Spigot","offer_id":56462008451458,"sku":null,"price":3413.6,"currency_code":"GBP","in_stock":true},{"title":"500mm \/ EC Single Phase Rectangular Spigot","offer_id":56462029390210,"sku":null,"price":3422.95,"currency_code":"GBP","in_stock":true},{"title":"500mm \/ EC Three Phase Circular Spigot","offer_id":56462029422978,"sku":null,"price":3549.6,"currency_code":"GBP","in_stock":true},{"title":"500mm \/ EC Three Phase Rectangular Spigot","offer_id":56462029455746,"sku":null,"price":3575.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/4597\/1631\/files\/STDL_05.png?v=1770323011","url":"https:\/\/buyventilation.co.uk\/products\/twinflow-stdl","provider":"Buy Ventilation","version":"1.0","type":"link"}