{"product_id":"4-6-inch-flexible-ducting-hose-pvc-coated-aluminium","title":"4 \u0026 6 Inch Flexible Ducting Hose – PVC-Coated Aluminium, 2m to 10m with Clamps","description":"\u003ch3\u003eFits your fan. Fits your filter. Fits the gap in between.\u003c\/h3\u003e\n\u003cp\u003eEvery extraction setup needs a run of duct, and the duct is usually the part people buy last and regret first. Too short, and you end up joining two pieces with tape. Too flimsy, and it kinks behind the tent and strangles the airflow you paid a fan to produce.\u003c\/p\u003e\n\u003cp\u003eThis is the ducting that just works. PVC-coated aluminium in the two sizes that actually matter — 100mm (4 inch) and 150mm (6 inch) — cut to four lengths, in black, grey or white, with two hose clamps in the box. It pulls out to length, compresses back down for storage, and routes around corners without collapsing.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePVC-coated aluminium\u003c\/strong\u003e — a tough outer skin over aluminium foil, so it holds its shape instead of tearing like bare foil ducting.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eTwo clamps included\u003c\/strong\u003e — no hunting for jubilee clips. Open the box, clamp both ends, done.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eThe two sizes that matter\u003c\/strong\u003e — 100mm (4 inch) and 150mm (6 inch), the standard flange sizes on almost every inline fan and carbon filter sold in the UK.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFour lengths\u003c\/strong\u003e — 2m, 3m, 5m and 10m, so you buy the run you actually need instead of coiling six spare metres behind the tent.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eThree colours\u003c\/strong\u003e — black, grey or white, so the duct blends into the room instead of announcing itself.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eStretches and compresses\u003c\/strong\u003e — arrives compressed, pulls out to full length, and packs back down when you strip the tent.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFlexes around corners\u003c\/strong\u003e — routes past tent poles, through hatches and into loft spaces without needing rigid elbows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy duct choice changes your airflow\u003c\/h3\u003e\n\u003cp\u003eFan ratings are measured on a short, straight, open pipe. Your grow tent is not one. Every metre of duct, every bend and every crush point costs you airflow — a 350 CFM fan sitting behind ten metres of kinked ducting is not a 350 CFM fan any more.\u003c\/p\u003e\n\u003cp\u003eTwo rules cover most setups. \u003cstrong\u003eKeep the run as short as you sensibly can\u003c\/strong\u003e, and \u003cstrong\u003ematch the duct diameter to the fan flange exactly\u003c\/strong\u003e. Necking a 6 inch fan down to 4 inch duct does not just cost you volume, it makes the fan louder and works the motor harder. If your fan and filter are 6 inch, buy 6 inch duct.\u003c\/p\u003e\n\u003ch3\u003eChoosing your size and length\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm (4 inch)\u003c\/strong\u003e — 4 inch inline fans and carbon filters, small tents up to roughly 60 × 60cm, tumble dryers, bathroom extractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150mm (6 inch)\u003c\/strong\u003e — 6 inch inline fans and carbon filters, tents from 80 × 80cm upwards, cooker hoods, larger grow rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2m and 3m\u003c\/strong\u003e — filter to fan inside the tent, or a short hop to a wall or window vent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5m\u003c\/strong\u003e — the safe default for a tent in a spare room venting to a window or into the loft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10m\u003c\/strong\u003e — long runs through a loft or across a garage, or two separate runs (intake and exhaust) from one purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuy a little longer than you measure. Trimming ducting is easy — joining it is not.\u003c\/p\u003e\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrow tent exhaust: carbon filter to inline fan to window or loft\u003c\/li\u003e\n\u003cli\u003eGrow tent active intake and air exchange\u003c\/li\u003e\n\u003cli\u003eVenting a tumble dryer through a wall or window\u003c\/li\u003e\n\u003cli\u003eBathroom and kitchen extractor fans\u003c\/li\u003e\n\u003cli\u003eCooker hood and range hood extraction\u003c\/li\u003e\n\u003cli\u003ePortable air conditioners and workshop fume extraction\u003c\/li\u003e\n\u003cli\u003eLoft, garage and outbuilding ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm (4 inch) and 150mm (6 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2m, 3m, 5m and 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack, Grey, White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePVC-coated aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlexible, extendable ducting hose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 × hose clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 inch and 6 inch inline fans, carbon filters, tumble dryers, extractor hoods\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × flexible ducting hose in your chosen diameter, length and colour\u003c\/li\u003e\n\u003cli\u003e2 × hose clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGood to Know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLengths are the fully extended length. The ducting arrives compressed — stretch it out gently before fitting, and don't pull it beyond its natural length.\u003c\/li\u003e\n\u003cli\u003eClamp both ends. Tape on its own works loose once the fan starts vibrating.\u003c\/li\u003e\n\u003cli\u003eKeep bends gentle. One sharp 90° kink can cost you more airflow than several extra metres of straight run.\u003c\/li\u003e\n\u003cli\u003eThis is standard flexible ducting, not acoustic or thermally insulated ducting. If noise is your main concern, an acoustic duct or an inline silencer will do more for you.\u003c\/li\u003e\n\u003cli\u003eTrim with sharp scissors or tin snips, and handle the cut end carefully — cut edges are sharp.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGet the ducting right, and the rest of your ventilation quietly does its job.\u003c\/p\u003e\n\u003c!-- hc:guides --\u003e\n\u003ch3\u003eNot sure yet? Read the guides\u003c\/h3\u003e\n\u003cp\u003eWe wrote guides that mention this exact product, with no sales pitch and no prices — just the answer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/herb-connect.com\/blogs\/news\/how-do-i-match-a-carbon-filter-to-my-fan\"\u003eHow Do I Match a Carbon Filter to My Fan?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/herb-connect.com\/blogs\/news\/how-do-i-stop-my-grow-smelling-out-the-house\"\u003eHow Do I Stop My Grow Smelling Out the House?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/herb-connect.com\/blogs\/news\/will-a-grow-tent-fan-be-too-loud-for-a-bedroom\"\u003eWill a Grow Tent Fan Be Too Loud for a Bedroom?\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/hc:guides --\u003e","brand":"Herb-Connect","offers":[{"title":"Black \/ 100mm (4 inch) x 2m","offer_id":58276077437259,"sku":"100004008:203192833#100mm x 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