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G.A.S Premium Black Combi Ducting offers HVAC-certified durability for hydroponic ventilation. Featuring triple-layer reinforced laminate and a matte black finish, it ensures total light-proofing and kink resistance. This flexible ducting provides a puncture-proof, high-airflow solution for extractor fans and carbon filters in any discreet grow room.
Ensure a discreet and light-tight ventilation setup with G.A.S Premium Black Combi Ducting. Engineered to meet the demanding standards of HVAC professionals, this high-quality flexible ducting features a robust triple-layer construction. By combining multiple layers of laminate and PVC, this ducting is designed to resist tearing, prevent air leaks, and withstand the high pressures of professional extraction fans.
The defining feature of the G.A.S Premium Black Combi range is its matte black inner and outer finishes. These layers are specifically designed to absorb light and eliminate internal reflections, preventing "light glow" from escaping your grow room through the ventilation runs. This industry-standard design provides indoor growers with long-lasting clean air, reduced risk of punctures, and total privacy for their botanical environment.
Key Benefits of Combi Ducting
- Triple-Layer Durability: A reinforced laminate design makes this ducting far tougher than standard aluminium foil ducting, preventing pinhole light leaks.
- HVAC Certified Quality: Manufactured in Europe to professional standards, ensuring reliable performance in high-humidity grow rooms.
- Total Light Blockage: The matte black outer and inner skins ensure zero light transmission, protecting your plants' dark cycles.
- Kink Resistant: The high-tensile steel wire spiral maintains the ducting’s circular shape, even when navigating tight corners.
- Reduced Contaminant Risk: The smooth internal surface reduces air resistance and prevents the accumulation of dust and debris.
How to Use
- Measure Your Run: Determine the length needed between your extraction fan and your outlet point. Keep the ducting as taut as possible to maximise airflow efficiency.
- Cut to Size: Use a sharp utility knife to cut through the laminate layers and high-quality wire snips to cut the internal steel coil.
- Secure the Connection: Slide the ducting over the flange of your carbon filter or fan.
- Airtight Sealing: Fix the ducting in place using a Jubilee Clip or Ducting Clip. For added security and to prevent any smell leaks, apply Aluminium Duct Tape over the joint.
- Routine Maintenance: To ensure life-long, unhindered air ventilation, we recommend cleaning or wiping the interior of your ducting between every crop cycle.
Please note: 4" and 5" sizes are Standard Black Combi, not Premium. Brand may differ but will be of the same or better quality.
Frequently Asked Questions
Is Black Combi ducting stronger than standard silver ducting?
Yes. Standard Aluminium ducting is a single layer of foil that tears easily. G.A.S Premium Black Combi uses three layers, including a protective outer jacket, making it much more resistant to punctures and mechanical damage.Does this ducting stop the sound of the fan?
While it provides slightly better sound dampening than thin aluminium foil, it is not "acoustic" ducting. Its primary purpose is strength, durability, and total light-proofing. For maximum noise reduction, you should look at the G.A.S Acoustic Ducting range.Can I use this for my air-cooled lights?
Absolutely. The matte black interior helps prevent light from reflecting down the ducting and out of your ventilation ports, making it the perfect choice for air-cooled reflectors.Will this ducting fit any brand of extractor fan?
Yes, as long as the diameters match. For example, 152mm (6-inch) G.A.S Combi Ducting will fit any standard 6-inch extractor fan flange.SKU: 1263Construction: Triple-layer reinforced laminate
Colour: Matte Black (Inner & Outer)
Origin: Manufactured in Europe
Certification: HVAC Industry Standard
Diameters Available: 102mm (Standard), 127mm (Standard), 152mm, 203mm, 254mm, 315mm
Lengths Available: 5 Metre and 10 Metre boxesPlease note: Brand may differ but will be of the same or better quality.
Free delivery on orders over £60*
- UK Mainland onlyStandard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland onlyExpress Delivery £8.95*
- Next Working Day**
- UK Mainland onlyScottish Highlands £15.95*
- 2-5 Days***Can not be used with Heavy / Large items
**If ordered on a working day before 2pm cut off (Saturday and Sunday are not classed as working days).Please See Delivery and Returns page for more details.