Aluminium Flexible Duct in Nairobi | Wisdo Merchants
Technical Specifications
| Property | Value |
|---|---|
| Type | Aluminium flexible air duct |
| Construction | Aluminium foil layers around a spiral steel wire |
| Sizes available | 4″, 6″, 8″, 10″ and 12″ diameter |
| Shape | Round, flexible and compressible |
| Connection | Clamped or taped onto round collars and spigots |
| Uses | AC supply and return, ventilation, fresh air and extract fans |
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Aluminium Flexible Duct for AC, Ventilation and Extract Systems
Rigid sheet-metal ducts work well on long, straight runs. The last few metres to each grill are a different story. Ceiling joists, beams, pipes and lights get in the way, and custom bends take time to make. Aluminium flexible duct solves this. It bends around obstacles and connects the main duct to each outlet in minutes. At Wisdo Merchants, we stock it in 4″, 6″, 8″, 10″ and 12″ sizes for HVAC contractors, fit-out companies and electricians across Nairobi and Kenya.
A duct carries air from a fan or air handling unit to where it’s needed. This duct is made from layers of aluminium foil wrapped around a spiral steel wire. The wire holds the duct round, while the foil makes it airtight and lets it bend, stretch and compress to fit the space.
Features and Benefits of the Aluminium Flexible Duct
- Five sizes in stock. Choose 4″, 6″, 8″, 10″ or 12″ to match your fan, collar or grill.
- Bends around obstacles. It routes around beams, pipes and lights without custom fittings.
- Fast installation. You cut it to length and connect it in minutes, which saves labour on site.
- Lightweight aluminium. It’s easy to carry, lift and support in the ceiling, and the foil doesn’t rust.
- Absorbs vibration. The flexible wall reduces noise and vibration from fans.
For contractors, this means quicker installs and neater ceilings. Meanwhile, clients get a working system sooner and at a lower labour cost.
Technical Specifications
| Property | Value |
|---|---|
| Type | Aluminium flexible air duct |
| Brand | VENT FLEX (made in UAE) |
| Insulation | Un-insulated |
| Construction | Aluminium foil layers around a spiral steel wire |
| Sizes available | 4″, 6″, 8″, 10″ and 12″ diameter |
| Shape | Round, flexible and compressible |
| Connection | Clamped or taped onto round collars and spigots |
| Uses | AC supply and return, ventilation, fresh air and extract fans |
Applications of the Aluminium Flexible Duct and How to Use It
- 4″ and 6″: bathroom and toilet extractor fans, dryer and small appliance exhaust
- 6″ and 8″: kitchen extract, ceiling outlets and small ducted AC branches
- 10″ and 12″: larger supply and return branches, fresh air and commercial extract systems
- Connecting diffusers and grills to the main duct in ducted AC systems
- Temporary ventilation on sites and at events
Connecting an AC Outlet
Picture an installer connecting a ceiling outlet to a ducted AC system. First, they pick the duct size that matches the outlet collar, for example 8″. Next, they measure the route, cut the duct to length with a little slack, and slide one end over the main duct collar. After that, they fix it with a clamp or cable tie, seal the joint with tape, and run the duct to the outlet without sharp bends. Finally, they connect the outlet end the same way, support the duct so it doesn’t sag, and test the airflow.
Getting the Most from Your Ducts
Flexible duct works best with a well-sealed system. Seal the collars with STAR Acry Seal for duct joints, and wrap the connections with our reinforced foil tape. Then finish each outlet with our double-deflection supply grill with damper to aim and balance the air.
Safety and Handling
- Watch the wire ends. Cut wire can be sharp, so wear gloves.
- Avoid sharp bends. Tight kinks choke airflow and strain the fan.
- Support it properly. Hang it with straps so it doesn’t sag or kink.
- Keep it extended. Pull the duct fairly straight, because compressed duct restricts airflow.
- Keep it away from heat. Don’t run it near hot pipes, flues or light fittings.
Frequently Asked Questions
Which size do I need?
Match the duct to the collar or spigot on your fan, grill or main duct. As a guide, 4″ suits small bathroom fans, while 10″ and 12″ suit larger supply and extract runs. Call us if you’re unsure.
Can I use flexible duct for the whole system?
It’s best for short connections to outlets. Use rigid duct for long main runs, because flexible duct resists airflow more over long lengths.
How do I cut aluminium flexible duct?
Cut through the foil with a sharp knife, then snip the wire with cutters. Wear gloves, since the wire end is sharp.
Why is my airflow weak after installing it?
Usually, the duct is kinked, sagging, too long or too small. Pull it straighter, shorten the run, support it properly, or move up a size.
Is this duct insulated?
No. VENT FLEX is an un-insulated aluminium duct, ideal for extract fans and ventilation. If cold AC air runs through a hot ceiling, wrap the duct with insulation to stop heat gain and condensation.
Do you deliver outside Nairobi?
We offer same-day delivery once your order is confirmed, subject to stock availability. Call or email our sales team to confirm stock and arrange delivery to your site.
Order Aluminium Flexible Duct from Wisdo Merchants
Quick, neat connections make every installation easier. Our aluminium flexible duct comes in 4″, 6″, 8″, 10″ and 12″ sizes to suit every fan and outlet. Furthermore, you can browse our air conditioning range to complete your project.
Visit us: Dar es Salaam Road, Off Enterprise Road, Industrial Area, Nairobi
Call: +254 795 938305
Email: sales@wisdomerchants.com
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