Round Duct Tee AWENTA KO125-26 ø125 mm – AWENTA KO125-26

AWENTA round duct tee KO125-26 is a ventilation fitting designed for ø125 mm circular ducts. The three-way connector enables a branch connection from a main duct into a perpendicular run while maintaining airflow continuity. It is intended for use in HVAC systems in residential and commercial buildings and is compatible with standard round ductwork of matching diameter.

Advantages

The tee provides a compact and stable branching solution for ø125 mm systems, manufactured to fit standard circular ducts for easy installation. Its smooth internal profile reduces turbulence and pressure loss at the junction. The fitting allows reliable airflow distribution when integrating an inline branch into existing duct routes and supports a neat, space-saving layout in ventilation networks.

Suitable for

• Branching supply or exhaust air in residential ventilation systems
• Connecting a branch line in commercial HVAC installations
• Retrofit and new-build projects requiring a 125 mm duct junction
• Bathroom, kitchen or localized extraction points from a main duct

Key specifications

• Designed for round ducts with an internal diameter of 125 mm
• Three-way tee shape for perpendicular branch connection
• Compatible with standard circular duct systems and fittings
• Internal profile optimized for reduced airflow resistance

How to use

Select the tee where a perpendicular branch from a 125 mm main duct is required. Ensure mating ducts are clean and free of debris, then align the ends and join using suitable clamping bands, rivets or sealed connectors consistent with the duct material and site practice. Check alignment and secure all connections to prevent leakage. Inspect the installation for smooth airflow and adjust supports to avoid strain on the joints.

Usage recommendations

For best performance, pair the tee with ducts and accessories of matching diameter and use appropriate sealing (cloth tape, silicone or gasket) at joints. Avoid sharp bends immediately adjacent to the tee to minimize pressure losses; provide access for inspection and cleaning where the branch serves extraction points.