Flexible ventilation duct airRoxy FLEX 85 — ø85 mm, flexible air ducting

Flexible ventilation duct airRoxy FLEX 85 is a flexible air ducting element with a nominal diameter of 85 mm (ø85) designed for air extraction and supply in residential and light-commercial ventilation systems. Its flexible construction allows the duct to be routed through walls, ceilings and other confined spaces, enabling connection between fans, vents and adapters where a compact and bendable duct is required.

Advantages

The airRoxy FLEX 85 offers a combination of flexibility and dimensional stability that simplifies installation in constrained or irregular runs. Its lightweight design reduces strain on mounting points and connected equipment. The duct is compatible with standard ø85 fittings and adapters, making it easy to integrate into existing ventilation setups. The material choice ensures smooth internal surfaces for reduced airflow resistance and straightforward maintenance.

Suitable for

• Connecting extractor fans to wall or ceiling outlets in bathrooms and kitchens
• Branching or extending ventilation runs in apartments and houses
• Routing air between ventilation units and grilles in confined spaces
• Temporary or retrofit installations where rigid ducts are impractical

Key specifications

• Nominal diameter: 85 mm (ø85)
• Flexible construction for bends and offsets
• Lightweight, easy-to-handle design
• Smooth internal surface to minimise airflow resistance
• Suitable for indoor ventilation airflows in residential and light-commercial applications

How to use

Measure and cut the airRoxy FLEX 85 to the required length using appropriate tools, ensuring a clean, square cut. Securely fit the duct onto the fan outlet, grille or adapter until seated, and fasten with suitable clamps or tape to create an airtight connection. Route the duct avoiding sharp kinks; use gentle curves and supports where necessary to maintain airflow. Trim any excess and check for leaks or loose connections before testing the ventilation system.

Usage recommendations

For best performance, avoid compressing the duct excessively and keep bends as gradual as possible. Use compatible ø85 fittings and corrosion-resistant clamps for durable joins. Inspect connections periodically and replace the duct if visible damage or persistent airflow restriction occurs.