Klimatizace
od VDL
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.
| 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.
| 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.
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.
After 25 years of selling grow gear out of Amsterdam, we can tell you the number one ventilation mistake isn't buying the wrong fan — it's the ducting. People underestimate how much a kinked or oversized duct kills performance. We've had customers come in confused about why their 200 m³/h fan isn't keeping temps below 28°C, and the answer is usually a 3-metre duct with two right-angle bends and a sag in the middle. Straighten the run, lose one bend, and suddenly the same fan does its job.
The VDL Aluconnect is the duct we'd grab for a small to medium tent — 60x60 through 120x120. It's light enough that you can hang it from the tent's frame bars with cable ties without stressing the poles. Pick it up and you'll notice it weighs almost nothing compared to insulated ducting, which matters when your tent frame is aluminium poles, not scaffolding. The inner surface has a slight texture from the laminate — not mirror-smooth, which means marginally more air resistance than rigid metal duct, but for runs under 3 metres the difference is negligible.
If you're running a larger setup — 150x150 or bigger, with a 250+ m³/h fan — you'll want to look at 150mm ducting instead. The 127mm Aluconnect works fine for fans up to about 200 m³/h. Push beyond that and you'll hear the air whistling through, which means the duct is a bottleneck.
Match the duct diameter to your fan's outlet. A 100mm fan takes the 102mm duct; a 125mm fan takes the 127mm. If your tent is 100x100 cm or larger, the 127mm gives better airflow. Never go smaller than your fan's rated diameter — it restricts extraction and makes the motor work harder.
Yes. Extend it fully, measure what you need plus 20 cm for overlaps, and cut with scissors or tin snips. The steel wire frame snips cleanly. Always use the shortest run possible — less duct means less airflow resistance.
Not really. Uninsulated aluminium ducting transmits fan noise and can even amplify vibration hum. If noise is a concern, look at insulated (acoustic) ducting, which has a foam or fibre layer that dampens sound. The VDL Aluconnect is built for airflow efficiency, not sound deadening.
Use duct clamps (jubilee clips) at every join — fan, filter, tent port. Tighten until the aluminium compresses slightly. For extra security, wrap the joint with aluminium tape. Gaffer tape looks similar but degrades in heat and loses adhesion within weeks.
Dust and debris build up inside over time, especially if you're not using a pre-filter on your intake. Every few grows, disconnect the duct, extend it fully, and shake it out or wipe the interior with a damp cloth. Replace it if the laminate starts peeling or the wire frame loses shape.
Yes. The VDL Aluconnect works for both intake and extraction. For passive intake, you don't even need a fan — just route the duct from a tent port to your fresh air source. For active intake with a second fan, use the same diameter-matching rule.
Rigid ducting has a smoother interior, so air flows with less resistance — roughly 10-15% more efficient over the same distance. But it can't bend, so you need elbow joints for every turn. Flexible aluminium ducting like the Aluconnect bends freely, installs in minutes, and costs a fraction of a rigid setup. For grow tents with short duct runs under 3 metres, the performance difference is minimal.
Last updated: April 2026
