AC Infinity Flexible Four-Layer Ducting – For Inline Fans
AC Infinity Flexible Four-Layer Ducting – For Inline Fans
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
- 14-day returns
- Price match promise
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Description
Tough, Leak-Resistant Ducting That Holds Its Airflow
AC Infinity Flexible Four-Layer Ducting connects inline fans, carbon filters and outlets in a grow tent or grow room without the tears and air leaks that plague thin single-layer foil duct. Two layers of flame-resistant aluminium foil line the inside, two layers of PVC thermoplastic protect the outside from cuts and snags, and a spiral steel wire keeps the tube round through bends so the fan is not fighting a crushed or kinked run. Each length comes with two stainless steel duct clamps in the matching size, and the tube can be cut down to fit.
Key Benefits
- Four-layer wall — dual aluminium foil inside, dual PVC outside, far harder to tear or puncture than bare foil duct
- Fewer leaks, better airflow — the sealed wall keeps extracted air (and odour) inside the duct all the way to the outlet
- Spiral steel-wire frame — flexes round corners and into tight spaces while holding its shape
- Clamps included — two stainless steel clamps, tightened with a Phillips screwdriver
- Cut to length — 7.6 m (25 ft) of duct that shortens to suit any layout
How to Use
- Plan the route: keep the run as short and straight as you can; every tight bend costs airflow and adds noise.
- Cut to length: slice through the PVC and foil with a sharp knife, snip the steel wire with side cutters, then tape the cut edge with foil tape.
- Connect: slide the duct over the fan, filter or vent spigot, fit a clamp and tighten it with a Phillips screwdriver.
- Stretch it out: run the duct at full extension; bunched sections create turbulence that reduces the fan's real airflow.
- Support long runs: hang the duct from the tent frame or ceiling so it does not sag between the fan and the outlet.
Technical Specifications
- Models: AI-DTA8 — 200mm (8 in) · AI-DTA10 — 250mm (10 in) · AI-DTA12 — 305mm (12 in), each 7.6 m (25 ft)
- Duct size (bore): 20.3 cm / 8 in · 25.4 cm / 10 in · 30.5 cm / 12 in
- Outer diameter: 32.3 cm (12.72 in) on the 305mm (12 in)
- Length: 7.6 m (25 ft), can be cut shorter
- Inner layers: dual aluminium foil, flame resistant
- Outer layers: dual PVC thermoplastic
- Structure: spiral steel wire
- Included: 2 x stainless steel duct clamps, matching size, Phillips-screw tightened
- Uses: grow tent and grow room extraction and intake, HVAC, cupboard and equipment cooling
Frequently Asked Questions
Will the 305mm (12 in) ducting fit a 315mm fan?
It is a true 12-inch duct with a 30.5 cm bore, the duct size AC Infinity use on their 12-inch Cloudline S12 and T12 fans. Many metric fans and filters have 315mm spigots, about 1 cm wider, so measure your spigot before you order.
Can I cut it to a shorter length?
Yes. Cut through the PVC and foil layers with a sharp knife, snip the spiral wire with side cutters, and wrap the cut edge with foil tape so it cannot fray or scratch.
Are the clamps included?
Yes, two stainless steel duct clamps in the same size as the ducting come with each length — enough for one fan or filter connection at each end.
Works Well With

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.


