{"product_id":"90-degree-bend-rigid-ducting-part","title":"90 Degree Bend Rigid Ducting Part","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003e90 Degree Bend Rigid Ducting Part — Smooth Metal Elbows for Efficient Extraction\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers running extraction systems who want maximum airflow and minimum noise without kinked flexible ducting\u003c\/p\u003e\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eIf you're bending flexible ducting into sharp corners, you're losing airflow and making noise you don't need to. This aluminium elbow sorts both problems in one go. Proper kit for anyone serious about extraction efficiency.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eA 90 degree bend rigid ducting part is a \u003cstrong\u003elightweight aluminium connecting segment\u003c\/strong\u003e designed to create smooth, swept right-angle corners in your extraction ducting. Unlike kinked flexible ducting—which creates turbulence, reduces airflow, and increases noise—this rigid duct elbow maintains smooth internal surfaces that let air pass cleanly and quietly. It's a simple component that makes a measurable difference to how your extraction system actually performs.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eThis sits at the heart of the choice between rigid and flexible ducting for grow rooms.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid metal bends vs. kinked flexible ducting:\u003c\/strong\u003e Smooth interior surfaces eliminate the ruffled edges that create noise and air resistance. Flexible ducting bent sharply compresses on one side, creating a rough, turbulent passage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow efficiency:\u003c\/strong\u003e Each 90° bend in your ducting typically costs you 40–60% in CFM (cubic feet per minute). This bend minimises that loss by avoiding sharp kinks and maintaining smooth internal geometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise:\u003c\/strong\u003e Metal elbows direct airflow cleanly and quietly. Flex ducting creates eddies and vortexes that ramp up fan noise noticeably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Aluminium won't crumple, collapse, or develop weak spots like plastic or cheap thin-gauge alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn short: proper rigid bends work harder and quieter than bent flexible ducting. Your extraction fan doesn't have to strain as much, and your neighbours don't hear it.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eA 90 degree ducting elbow is straightforward to install and critical to system layout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation basics\u003c\/strong\u003e\u003cbr\u003ePush-fit connection. Make a break in your ducting run and connect the bend between two duct sections using duct clips, duct tape, or matched connectors. The all-metal construction is robust enough to tie directly to a tent pole, or suspend using chain or ratchet straps without damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSystem layout\u003c\/strong\u003e\u003cbr\u003eThe shortest ducting route from your growing space to outside is always best. Use this elbow to create smooth 90-degree corners rather than forcing flexible ducting into tight bends. Every sharp kink costs you airflow and adds noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePaired with extraction fans and filters\u003c\/strong\u003e\u003cbr\u003eWhen sizing your extraction fan (measured in CFM), factor in losses from bends, carbon filter resistance, long duct runs, and silencers. Two 90-degree bends are a standard part of that calculation. Using smooth metal bends instead of kinked flex ducting will actually help your system perform closer to its rated capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest practice\u003c\/strong\u003e\u003cbr\u003eKeep your ducting tight and straight wherever possible. Slack or crumpled ducting creates peaks, troughs, and air eddies that slow flow and increase noise. This bend helps you maintain smooth airflow throughout the entire run.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Lightweight aluminium (non-corrosive, durable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Pressed metal with smooth interior surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBend angle:\u003c\/strong\u003e Fixed 90 degrees (swept curve design to minimise turbulence)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard diameters available:\u003c\/strong\u003e 4\", 5\", 6\" (also 75mm, 90mm, 100mm, 125mm metric)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection type:\u003c\/strong\u003e Push-fit; compatible with duct clips, duct tape, or standard connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Smooth internal geometry minimises pressure loss and airflow restriction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise reduction:\u003c\/strong\u003e Metal construction directs airflow smoothly, significantly quieter than kinked flexible ducting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers upgrading from flexible to rigid ducting extraction systems\u003c\/li\u003e\n\u003cli\u003eAnyone running longer ducting routes where efficiency really matters\u003c\/li\u003e\n\u003cli\u003eSetups in noise-sensitive environments where silent operation is important\u003c\/li\u003e\n\u003cli\u003eGrowers who want to maximise their extraction fan's actual performance without waste\u003c\/li\u003e\n\u003cli\u003eThose replacing kinked flexible bends that are losing airflow and creating noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly suited to anyone who's realised that cheap, hastily-bent flexible ducting is costing them both efficiency and peace and quiet.\u003c\/p\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eThis is one of those components that doesn't look exciting but absolutely matters. The difference between a kinked flexible bend and a proper smooth metal elbow is measurable: better airflow, quieter operation, less fan strain. If your extraction system includes a 90-degree corner, you want this rather than crushed flex ducting.\u003c\/p\u003e\n\u003cp\u003eSimple, reliable, and effective. Worth picking up while you're building or upgrading your extraction setup. Does exactly what it should, day in, day out.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"METAL DUCTING","offers":[{"title":"4\"","offer_id":47916276089002,"sku":"82472","price":5.99,"currency_code":"GBP","in_stock":true},{"title":"5\"","offer_id":47916276121770,"sku":"82482","price":8.99,"currency_code":"GBP","in_stock":true},{"title":"6\"","offer_id":47916276154538,"sku":"82492","price":11.99,"currency_code":"GBP","in_stock":true},{"title":"8\"","offer_id":47916276187306,"sku":"82502","price":18.99,"currency_code":"GBP","in_stock":true},{"title":"10\"","offer_id":47916276220074,"sku":"82452","price":20.99,"currency_code":"GBP","in_stock":true},{"title":"12\"","offer_id":47916276252842,"sku":"82462","price":30.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/main_11.jpg?v=1769190449","url":"https:\/\/growershouse.co.uk\/products\/90-degree-bend-rigid-ducting-part","provider":"Growers House ","version":"1.0","type":"link"}