Black Combi Ducting 2.5m — 4-Layer Multi-Laminated

Black Combi Ducting 2.5m — 4-Layer Multi-Laminated Light-Tight Duct

A 4-layer multi-laminated ducting with an encapsulating high-tensile steel wire helix — ensures strength and durability beyond standard combi ducting. Black PVC outer layer is totally plant-safe and acts as a strong vapour and light barrier, providing extra airtightness over standard alloy ducting while staying flexible. The 4-layer construction means significantly better acoustic and light properties than standard silver combi.

Why growers choose black combi ducting:

• 4-layer multi-laminated construction — stronger and more durable than standard combi
• High-tensile steel wire helix — holds shape, doesn't collapse under extract suction
• Black PVC outer — totally plant-safe, blends with dark grow rooms
• Strong vapour barrier — better airtightness than standard alloy duct
• Light-tight construction — no light leaks for sealed dark cycles
• Still very flexible — bends around corners and obstacles
• 2.5m practical length — enough for short runs or repair work

Who it's not for:

Not as quiet as acoustic ducting (RAM Sonoduct, Phonic Trap) — if noise is a major concern, step up to acoustic alternatives. For longer runs, 5m or 10m roll lengths are better value than multiple 2.5m sections. Check the diameter matches your fan and filter sizes — 4", 5", 6", 8" all available; wrong size doesn't fit.

Available to collect from our Stone shop at Unit 24, Emerald Way, ST15 0SR — or ships the same working day from our UK warehouse. Not sure if this is the right fit? Give us a ring on 01785 556355 or email sales@roots2riches.com — we're growers ourselves, happy to help.