Flexible ventilation duct airRoxy FLEX 140 — flexible air duct Ø140 mm

Flexible ventilation duct airRoxy FLEX 140 is a corrugated flexible air duct with a nominal diameter of 140 mm designed for ventilation and air extraction systems. It provides a bendable connection between fans, diffusers and appliances where a rigid duct is impractical. The product is suitable for residential and light-commercial HVAC installations, allowing airflow routing in confined or curved spaces while maintaining airflow continuity.

Advantages

The corrugated construction enables easy bending and short-radius turns without special fittings. Its smooth internal profile relative to rigid fittings reduces turbulence and helps maintain consistent airflow. The duct is lightweight and easy to handle, which simplifies installation in tight or hard-to-reach locations. Compatibility with common 140 mm terminals and fan outlets makes it a practical choice for retrofits and new installations.

Suitable for

• Connecting exhaust fans to external vents in bathrooms and kitchens
• Linking inline fans to duct terminals in residential HVAC systems
• Routing ventilation through confined ceiling voids and crawl spaces
• Temporary or permanent connections where flexible routing is required

Key specifications

• Nominal diameter: 140 mm
• Corrugated, flexible construction for bendable routing
• Designed for ventilation and air extraction applications
• Suitable for residential and light-commercial HVAC use
• Lightweight and easy to handle for installation in confined spaces

How to use

Cut the flexible duct to the required length using an appropriate cutting tool, ensuring the cut is square to the duct axis. Fit the duct over the fan outlet or duct terminal and secure with a suitable clamp or tape rated for ventilation use. Avoid excessive compression or stretching of the duct; maintain gradual bends where possible to reduce airflow resistance. Inspect connections for airtightness and secure any joints to prevent air leakage.

Usage recommendations

For best performance, avoid sharp kinks and long unsupported spans. Use compatible clamps and sealants intended for ventilation systems. Periodically inspect the duct for damage and replace if tears or significant wear occur. This product is intended for air conveyance in mechanical ventilation systems and should be installed per local building codes and safety guidelines.