Flexible Aluminium Ducting for Grow Tent Ventilation
The VDL Aluconnect is a flexible aluminium ducting tube that connects your extraction fan to your carbon filter and channels stale, hot air out of your grow space. Built from aluminium and polyester laminate over a steel-wire spiral frame, this 5-metre duct bends around corners, threads through tent ports, and compresses down to roughly a fifth of its length for storage. Two diameters available: 102mm and 127mm.
Which Diameter Do You Need?
| Variant | Diameter | SKU | Best for |
|---|---|---|---|
| 102mm | 102 mm (4 inch) | GS0017 | Small tents up to 80x80 cm with inline fans rated at 100mm |
| 127mm | 127 mm (5 inch) | GS0034 | Medium tents 100x100 cm and above, or 125mm fan setups |
Match the duct diameter to your extraction fan's outlet. If your fan says 100mm, grab the 102mm. If it says 125mm, go for the 127mm. Forcing a mismatch with duct tape and reducers creates turbulence, kills airflow, and makes your fan work harder — which means more noise and a shorter lifespan.
Specifications for VDL Aluconnect Aluminium Ducting
| Spec | Value |
|---|---|
| Brand | VDL |
| Product | Aluconnect flexible aluminium ducting |
| Material | Aluminium and polyester laminate |
| Internal frame | Steel-wire spiral |
| Length (extended) | 5 metres |
| Available diameters | 102 mm / 127 mm |
| Compressible | Yes — collapses to approx. 1 metre |
| Use | Air extraction, circulation, intake |
Complete your ventilation setup: This duct is one piece of the puzzle. Pair it with an inline extraction fan and a carbon filter to actually move and clean the air. Duct clamps (jubilee clips) keep connections airtight — grab a pair if you don't already have them. A small clip-on circulation fan inside the tent keeps air moving across the canopy, which is a separate job from extraction.
Why Proper Aluminium Ducting Matters in a Grow Tent
Heat and humidity are the two things that silently wreck an indoor garden. Your lights pump out heat, your plants transpire moisture, and without a clear path for that air to leave the tent, temperatures climb past 30°C and relative humidity creeps toward condensation territory. That's when you get mould, bud rot, and stressed plants that stretch instead of flower.
The VDL Aluconnect aluminium ducting gives that stale air somewhere to go. The steel-wire frame holds its shape around bends without collapsing — something the ultra-cheap PVC ducts can't always manage. We've seen growers rig up dryer hose from the hardware shop, only to find it sagging in the middle after a week, choking airflow by 30-40%. The aluminium laminate on this one reflects heat rather than absorbing it, and it won't degrade under the warm, humid conditions inside a tent the way bare plastic does.
Honest limitation: this is semi-flexible ducting, not rigid. Every bend you add reduces airflow. A single 90-degree turn can cut effective extraction by roughly 15%. Keep bends gentle and the duct as straight as possible. If your setup forces two or more sharp turns, consider stepping up one diameter size to compensate — or repositioning your fan. At 5 metres, you've got plenty of length to work with, but don't leave excess duct bunched up. Cut what you don't need. A taut, short run beats a long, kinked one every time.
How to Install VDL Aluconnect Aluminium Ducting
- Measure the distance from your extraction fan outlet to where the air needs to exit — through a tent port, out a window, into a ceiling void. Add 20 cm for the overlap at each connection point.
- Extend the aluminium ducting to the length you need. Pull it out fully first, then compress to your measured length. Cut any excess with sharp scissors or tin snips — the wire frame clips easily.
- Slide one end of the duct over your fan outlet (or carbon filter flange). Push it on at least 8-10 cm for a solid grip.
- Secure with a duct clamp (jubilee clip). Tighten until the aluminium compresses slightly against the flange — snug, not crushing.
- Route the duct through your tent port. Keep bends gradual. If the duct needs to turn, aim for sweeping curves rather than sharp right angles.
- Attach the other end to your exhaust point or carbon filter, again with a duct clamp. Make sure there's no gap between the duct and the connection — any air leak means your carbon filter can't do its job properly.
- Switch on the fan and feel along the duct for air escaping at the joins. If you feel a draught, tighten the clamp or wrap the connection with aluminium tape.
