{"product_id":"t-piece-with-reducing-centre-flange-rigid-ducting-part","title":"T-Piece with Reducing Centre Flange Rigid Ducting Part","description":"```html\n\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eT-Piece with Reducing Centre Flange Rigid Ducting Part — Metal Branching Fitting for Unequal Duct Sizes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers building custom ventilation systems where ducting diameters don't match\u003c\/p\u003e\n\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\u003e\nThis solves a real problem — connecting different diameter ducting without buying a separate reducer. Galvanised steel, proper engineering, no faffing about. If your extraction system needs to branch from one size to another, this does it cleanly.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe T-Piece with Reducing Centre Flange is a \u003cstrong\u003erigid metal ducting fitting\u003c\/strong\u003e designed to branch your ventilation system whilst handling \u003cstrong\u003eunequal duct diameters\u003c\/strong\u003e in a single component. Made from \u003cstrong\u003egalvanised steel\u003c\/strong\u003e, it features two outer flanges of matching diameter and a centre flange of reduced size — letting you connect different sized ducting runs without the need for separate reducing collars.\u003c\/p\u003e\n\n\u003cp\u003eIt's a straightforward efficiency play. One fitting instead of two, less air turbulence, tighter system control. Good for growers who want their extraction sorted without overthinking it.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eThis sits in the \u003cstrong\u003emid-tier of rigid ducting fittings\u003c\/strong\u003e, positioned between budget PVC alternatives and commercial HVAC systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Standard Equal T-Piece:\u003c\/strong\u003e Standard T-pieces require all three connections to be the same diameter. This reducing variant lets you mix sizes, saving you a separate reducer fitting and the assembly hassle that goes with it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. PVC T-Pieces:\u003c\/strong\u003e Galvanised steel outperforms PVC for larger diameter applications and lasts longer under regular use. Steel also moves air more efficiently with less friction loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Flexible Ducting Systems:\u003c\/strong\u003e Rigid metal delivers superior airflow efficiency and durability. Flexible is cheaper and easier to route, but rigid wins on performance every time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn plain terms: you're getting a proper metal fitting that handles a specific job (mixing duct sizes) that most standard fittings can't do without extra parts.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSystem Design\u003c\/strong\u003e\u003cbr\u003e\nUse this when your extraction fan, filter, or intake point doesn't match the diameter of your main ducting run. Two identical outer flanges connect to matching diameter ducts; the centre flange branches to a different size. It's that simple.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003cbr\u003e\nConnect to rigid ducting using female-to-female couplings (slightly larger diameter than the fitting, slides over both connections). Seal all joints with quality duct tape or mastic to prevent air leaks. A tight seal keeps your extraction efficient — loose joints waste energy and kill system performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlacement in Your System\u003c\/strong\u003e\u003cbr\u003e\nKeep ducting runs as straight as possible. Every bend or turn costs you airflow. Position this T-piece where your diameter change needs to happen, not as a workaround further down the line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Applications\u003c\/strong\u003e\u003cbr\u003e\nConnecting a carbon filter to your main extraction duct when sizes differ. Branching intake air from a different sized source. Linking multiple rooms with varying duct diameters. Any situation where standard equal T-pieces leave you short.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Galvanised steel construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Reducing centre flange with two equal outer flanges and one reduced centre flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Male spigot flanges (requires female-to-female couplings for assembly)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e Standard UK market diameters include 100mm, 125mm, 150mm, 160mm, 180mm, and 200mm (specific reducing configurations made to order)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e Female-to-female couplings fitted over spigot connections, sealed with duct tape or mastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Heavy-duty, reusable, suitable for multiple system configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrdering:\u003c\/strong\u003e Made-to-order with custom diameter specifications available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers building custom extraction systems from scratch and need to integrate different duct diameters\u003c\/li\u003e\n\u003cli\u003eAnyone retrofitting or expanding an existing ventilation setup where duct sizes don't align\u003c\/li\u003e\n\u003cli\u003eExperienced growers who understand ducting principles and want to optimise airflow efficiency\u003c\/li\u003e\n\u003cli\u003eSystem builders looking to reduce component count and potential leak points\u003c\/li\u003e\n\u003cli\u003eGrowers running larger grow rooms or multi-room setups where diameter mismatches are common\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to setups where \u003cstrong\u003eyou know your exact duct sizes upfront\u003c\/strong\u003e and want to eliminate the guesswork around connectors and reducers.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eThis is a proper bit of kit that handles a specific problem cleanly. Galvanised steel, straightforward engineering, does exactly what it should. If you're building a ventilation system and your duct sizes don't match, this saves you hassle and money compared to buying separate fittings.\u003c\/p\u003e\n\n\u003cp\u003eWorth picking up whilst clearance stock lasts. Rigid metal ducting components like this are the backbone of efficient extraction — get the fittings right and the whole system breathes properly.\u003c\/p\u003e\n\n\u003c\/section\u003e\n```","brand":"METAL DUCTING","offers":[{"title":"2x 10-inch (254mm) to 1x 6-inch (152mm)","offer_id":47916591218858,"sku":"98162","price":22.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/t-piece_reducing_4_44f6918c-bb06-4eab-ac34-77bc7c7dfe83.jpg?v=1769196776","url":"https:\/\/growershouse.co.uk\/products\/t-piece-with-reducing-centre-flange-rigid-ducting-part","provider":"Growers House ","version":"1.0","type":"link"}