BLOOMLED / INDOOR GROWING

Combi Duct Alu/PVC 10 m - Ø250 mm - Grow Room Extraction

Ref. GN-250-ALUPVC-10M

Combi sheath in Alu/PVC 10m - 127mm diameter - 2

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250Diamètre (mm)

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Ø250 mm extraction with no bottleneck — 10 metres of twin-wall aluminium/PVC combi ducting to link fan, carbon filter and outlet without letting a single odour escape.

Hand-picked by BloomLED, indoor growing specialists for over 10 years: we only list kit we would fit in our own room.

Ø250 mm · 10 m compressible · Twin-wall alu/PVC · Steel spiral

VENTILATION DUCTING

Alu/PVC Combi Duct Ø250 mm - 10 m: extraction without the bottleneck

In a grow room the ducting is never just a pipe. It decides whether your fan delivers its rated airflow or wastes half of it fighting static pressure. BloomLED stocks this Ø250 mm, 10 metre Alu/PVC combi duct for high-volume setups - the ones running a large extractor into a carbon filter, where a single odour leak is one too many.

Alu/PVC combi duct 250 mm, 10 metres, for indoor grow room extraction

The combi construction layers aluminium and PVC around a helical steel spiral. That sandwich is the whole point: aluminium blocks odours and shrugs off the warm air coming off your lamps, while PVC brings the flex and puncture resistance that thin single-ply aluminium ducting simply does not have - the kind that tears the first time you reposition a tent.

All 10 metres compress down concertina-style for storage, then pull out to exactly the run you need. Cut it with a knife, clamp it, and keep the offcut for the second leg of the circuit - your intake, or the return into the filter. On a Ø250 build that is usually enough to cover both extraction and intake from a single purchase.

Specification	Value
Internal diameter	Ø 250 mm
Length	10 metres (compressible)
Material	Aluminium + PVC, twin wall
Reinforcement	Helical steel spiral
Compatibility	Ø250 extractor fans, intake fans and carbon filters
Fixing	Ø250 duct clamp (not included)
Reference	GN-250-ALUPVC-10M

250mm diameter

10metres of duct

2bonded walls

10+years of expertise

🌬️ Twin-wall alu + PVC

Aluminium stops odours escaping and handles warm extract air; PVC absorbs twisting and abrasion. Ducting that survives a tight bend instead of splitting at it.

🪗 Flexible and compressible

Ships compressed, extends to a full 10 metres. Set the length to the centimetre and avoid the slack loops that quietly strangle your fan's airflow.

🚫 Sealed against odours

Paired with a carbon filter it stops unfiltered air slipping out between the housing and the outlet. Essential the moment your grow shares a wall with living space.

🔧 Two-minute install

One clamp at each end, one turn of a screwdriver, done. No special tools, no proprietary fittings.

Which duct diameter should I use for my fan?

Match the duct to your fan's outlet exactly - Ø250 mm here. Necking down to a smaller duct raises static pressure, so the fan works harder, draws more power and gets noticeably louder. If you genuinely have to change diameter, fit a proper reducer rather than crushing the duct.

How do I attach the duct to a fan or carbon filter?

Slide 5-10 cm of ducting over the appliance collar, then tighten a Ø250 metal clamp over it. Firm is enough - over-tightening crushes the steel spiral. For heavy odour loads, add a wrap of aluminium tape over the joint for a perfect seal.

Does Alu/PVC ducting reduce fan noise?

The PVC layer damps vibration slightly, but silencing is not what this duct is for. For a real acoustic gain, use insulated ducting such as Phonic Trap, or fit a silencer on the fan outlet and run this duct after it.

BloomLED's rule of thumb: always order 10-20% more length than you measured. Slightly slack ducting bends without pinching and protects your fan's rated airflow - duct pulled drum-tight eventually cracks at the bends.

✓ Indoor growing experts for 10+ years✓ Technical advice from BloomLED✓ Dispatch within 24/48h✓ 100% secure payment

Reference GN-250-ALUPVC-10M

Data sheet

Type: Gaine
Diamètre (mm): 250

Condition New

Product copy of Combi sheath in Alu/PVC 10m - 127mm diameter ideal for professional use, personal use, performance. Quality and performance guaranteed.

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