{"product_id":"ram-combi-duct-lightproof-ducting","title":"RAM Combi-Duct – 4\" to 12\" Lightproof Black Ducting (5m \u0026 10m)","description":"\u003cp\u003e\u003cstrong\u003eLight is sneaky.\u003c\/strong\u003e A grow tent can be perfectly sealed and still leak a glow out through the one thing nobody thinks about, its silver ducting. That matters when your plants need real darkness, and it matters when you'd rather your setup didn't glow through a window at night. RAM Combi-Duct solves both: a black PVC outer layer that's fully lightproof, over a foil inner, round a high-tensile steel helix.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Combi-Duct\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightproof.\u003c\/strong\u003e The black PVC outer blocks light leaks in both directions, so your dark period stays dark and nothing shines out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-layer laminate.\u003c\/strong\u003e A foil inner and PVC outer make it more airtight and vapour-proof than plain aluminium ducting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant-safe and tough.\u003c\/strong\u003e The PVC outer resists tears and scuffs, and doesn't flake like foil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuieter than bare foil.\u003c\/strong\u003e The extra layers damp some of the rush and rattle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLooks the part.\u003c\/strong\u003e Matte black vanishes against a black tent or a dark ceiling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cp\u003eEvery diameter comes in 5m and 10m lengths: 4\" (102mm), 5\" (127mm), 6\" (152mm), 8\" (203mm), 10\" (254mm) and 12\" (315mm). Match the ducting to your fan and filter.\u003c\/p\u003e\n\n\u003ch3\u003eAluduct, Combi-Duct or Sonoduct?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDucting\u003c\/th\u003e\n\u003cth\u003eNoise\u003c\/th\u003e\n\u003cth\u003ePick it if…\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAluduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eYou want cheap, light and easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eCombi-Duct\u003c\/strong\u003e (this one)\u003c\/td\u003e\n\u003ctd\u003eBetter\u003c\/td\u003e\n\u003ctd\u003eLight leaks or looks matter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSonoduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBest\u003c\/td\u003e\n\u003ctd\u003eNoise, heat loss or condensation is a problem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNot just for growers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrow tents, propagation and mushroom chambers that need true darkness\u003c\/li\u003e\n\u003cli\u003eExtractor runs where you'd rather not see shiny foil\u003c\/li\u003e\n\u003cli\u003eWorkshops, garages and utility rooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRose's Pro-Tip\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003e\"Pull your ducting fully out and cut it to length, because bunched-up duct roars and steals airflow. If light leaks are your worry, check the joints too: a wrap of aluminium tape over each clip seals out the last chink of light as well as air.\"\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I cut it?\u003c\/strong\u003e\u003cbr\u003eSlice the layers with a sharp knife, then snip the steel wire with side cutters. Tuck the cut end of the wire inwards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I attach it?\u003c\/strong\u003e\u003cbr\u003eSlide it over the fan or filter spigot, secure it with a ducting clip or jubilee clip, then tape the joint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it the same diameter as my fan?\u003c\/strong\u003e\u003cbr\u003eUse the same size as your fan's spigot, e.g. a 6\" fan takes 6\" (152mm) ducting.\u003c\/p\u003e","brand":"RAM","offers":[{"title":"4\" (102mm) – 5m","offer_id":55091768918362,"sku":"08-360-250","price":9.95,"currency_code":"GBP","in_stock":true},{"title":"4\" (102mm) – 10m","offer_id":55091768951130,"sku":"08-360-205","price":16.95,"currency_code":"GBP","in_stock":true},{"title":"5\" (127mm) – 5m","offer_id":55091768983898,"sku":"08-360-255","price":11.95,"currency_code":"GBP","in_stock":true},{"title":"5\" (127mm) – 10m","offer_id":55091769016666,"sku":"BFH-RAMCOMBI-5IN","price":20.95,"currency_code":"GBP","in_stock":true},{"title":"6\" (152mm) – 5m","offer_id":55091769049434,"sku":"BFH-RAMCOMBI-6X5M","price":13.95,"currency_code":"GBP","in_stock":true},{"title":"6\" (152mm) – 10m","offer_id":55091769082202,"sku":"08-360-215","price":24.95,"currency_code":"GBP","in_stock":true},{"title":"8\" (203mm) – 5m","offer_id":55091769114970,"sku":"08-360-265","price":17.95,"currency_code":"GBP","in_stock":true},{"title":"8\" (203mm) – 10m","offer_id":55091769147738,"sku":"08-360-220","price":32.95,"currency_code":"GBP","in_stock":true},{"title":"10\" (254mm) – 5m","offer_id":55091769180506,"sku":"08-360-270","price":21.95,"currency_code":"GBP","in_stock":true},{"title":"10\" (254mm) – 10m","offer_id":55091769213274,"sku":"08-360-225","price":39.95,"currency_code":"GBP","in_stock":true},{"title":"12\" (315mm) – 5m","offer_id":55091769246042,"sku":"BFH-RAMCOMBI-12X5M","price":24.95,"currency_code":"GBP","in_stock":true},{"title":"12\" (315mm) – 10m","offer_id":55091769278810,"sku":"08-360-230","price":44.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/9861\/4106\/files\/rVWagzsx.jpg?v=1793135283","url":"https:\/\/blackflaghorticulture.com\/sq\/products\/ram-combi-duct-lightproof-ducting","provider":"Black Flag Horticulture","version":"1.0","type":"link"}