Round ventilation duct AWENTA KO125-05, Ø125 mm, length 0.5 m, white

The AWENTA round ventilation duct KO125-05 is a 0.5 m long, white duct section with a nominal diameter of 125 mm designed for air distribution and exhaust systems. This compact straight piece connects inline ventilation runs and fittings, allowing straightforward linking of fans, grilles and silencers in residential and light commercial installations. The smooth circular profile supports consistent airflow and straightforward assembly into existing Ø125 mm duct networks.

Advantages

This AWENTA duct section provides precise dimensional compatibility for Ø125 mm systems, simplifying connections between ventilation components. Its short 0.5 m length makes it suitable for tight spaces and for creating transitions or short extensions without excess material. The white finish offers a neutral appearance for visible installations and is easy to clean. The rigid construction maintains shape under normal operating conditions and helps preserve airflow efficiency.

Suitable for

• Connecting inline fans to ductwork in domestic ventilation systems
• Linking air grilles, diffusers or silencers in compact installations
• Short extensions or transitions where a 0.5 m straight section is required
• Light commercial ventilation runs with Ø125 mm diameter

Key specifications

• Nominal internal diameter: 125 mm
• Length: 0.5 m
• Shape: round/straight duct section
• Colour: white
• Material characteristics: rigid profile suitable for air distribution

How to use

Measure and mark the required positions within the ventilation run and ensure mating components share the same Ø125 mm diameter. Insert the duct ends into compatible fittings, collars or straight couplers and secure connections with appropriate clamps, screws or sealant as needed to prevent air leakage. Position the KO125-05 so that airflow is unobstructed and supports the intended direction of ventilation. Follow local building codes and ventilation design guidelines for support spacing and installation practice.

Usage recommendations

For optimal performance, inspect connection points for airtightness after installation and use compatible Ø125 mm sealing methods. Avoid sharp bends immediately adjacent to the duct ends and provide adequate mechanical support at regular intervals to prevent sagging or stress on joints. Use the KO125-05 for short linking runs; combine with longer duct sections when extended runs are required.