G.A.S Premium Black Combi Ducting (HVAC)

G.A.S Premium Black Combi Ducting (HVAC)

G.A.S Premium Black Combi Ducting is a high-quality, HVAC-certified flexible ventilation ducting designed to provide improved airflow, noise reduction and durability in extraction and ventilation systems.

Manufactured in Europe, this premium ducting features a three-layer insulated construction that helps reduce airflow noise, resistance and pressure build-up. Its tough, abrasion-resistant design makes it a reliable choice for ventilation installations where performance and longevity are important.

Unlike conventional aluminium foil ducting, G.A.S Premium Black Combi Ducting uses synthetic insulating materials rather than fibreglass wool. The non-absorbent construction is particularly useful in humid environments, helping to reduce moisture retention within the ducting.

The matte black inner and outer surfaces also help absorb light and minimise reflections, making this ducting suitable for grow rooms, grow tents and other indoor horticultural environments.

Available in 5 metre and 10 metre lengths, with a range of diameters to suit different ventilation systems.

How to Fit G.A.S Premium Black Combi Ducting

This flexible ducting connects to correctly sized male spigots on extraction fans, carbon filters and ventilation fittings. Installing it correctly helps maintain airflow and prevent air leaks.

1. Measure and cut: Measure the required ducting run, allowing enough length for secure connections. Cut the ducting using suitable tools, taking care around any exposed reinforcement or sharp edges.
2. Connect to your equipment: Slide the end of the ducting over the male spigot of your extraction fan, carbon filter or duct fitting. Ensure the ducting fits securely over the connection.
3. Secure the ducting: Use a correctly sized Jubilee clip, fast clamp or suitable duct tape to secure the ducting around the spigot. Ensure the connection is properly sealed to minimise air leaks.
4. Position the ducting: Gently extend the ducting along its intended route, keeping it as straight as practical. Avoid stretching it excessively or damaging the insulated construction.
5. Complete the installation: Connect the opposite end to your ventilation equipment or outlet and ensure the ducting is adequately supported without kinks or restrictions.

Joining Two Lengths of Ducting

If you need to connect two lengths of G.A.S Premium Black Combi Ducting, use a male duct connector in the correct diameter.

Slide the ducting over each end of the connector and secure both sides with suitable clamps or duct tape. Check that the connections are properly sealed to prevent air leaks.

Installation Advice

For efficient ventilation, keep ducting runs as short and straight as possible. Avoid sharp bends, compressed sections and unnecessary changes in direction, as these can increase turbulence and reduce airflow.

Where a change in direction is required, consider using a Pressed or Sectional Duct Bend. These provide a consistent bend radius, helping to maintain smoother airflow through the ventilation system.

Longer ducting runs should be adequately supported to prevent sagging and unnecessary strain on the connections.

G.A.S Premium Black Combi Ducting Specifications

Key Features & Benefits

• Three-layer insulated construction: Designed to reduce airflow noise and help limit pressure build-up within ventilation systems.
• HVAC certified: Manufactured for use in professional ventilation applications.
• Durable and abrasion-resistant: Robust construction provides improved resistance to tearing and general wear.
• Non-fibreglass insulation: Uses synthetic insulating materials, avoiding the risk of fibreglass fragments being released if the inner duct is damaged.
• Suitable for humid environments: Non-absorbent materials help limit moisture retention within the ducting.
• Matte black finish: Reduces internal and external light reflections.
• Flexible installation: Suitable for connecting extraction fans, carbon filters and other ventilation fittings.
• Choice of lengths: Available in 5m and 10m options to suit different installations.

Choosing the Right G.A.S Premium Black Combi Ducting

Choose a ducting diameter that matches the spigot size of your extraction fan, carbon filter or ventilation fitting. Using the correct size helps avoid unnecessary airflow restrictions and ensures a secure connection.

When selecting a length, consider the distance between your equipment and the ventilation outlet. A shorter, more direct ducting run will generally provide better airflow than one with multiple bends or excessive length.

Premium Black Combi Ducting vs Standard Combi Ducting

Standard Black Combi Ducting offers a durable alternative to basic aluminium foil ducting, typically using an aluminium inner layer with a protective outer covering.

G.A.S Premium Black Combi Ducting takes this further with a three-layer insulated construction designed to reduce noise and improve durability. Its synthetic insulation and matte black finish make it particularly suitable for demanding indoor ventilation installations.

For applications where noise reduction is a priority, this premium ducting is worth considering alongside conventional acoustic ducting and suitable duct silencers.