The Baxi Multifit 60/100 500mm Flue Extension 720643001 is a genuine concentric flue accessory designed to extend compatible Baxi boiler flue systems by 500mm. It is part of the Multifit range and is used to provide additional length when installing or adjusting horizontal or vertical flue runs.

Suitable for 60/100mm flue systems, it is compatible with a wide range of Baxi and Potterton boilers. The extension includes essential fixing screws and a support bracket to ensure a secure and stable installation. Its concentric design allows for safe passage of combustion gases while maintaining efficient airflow within the system.

Built for ease of installation, this flue extension helps installers achieve the required flue positioning without complex modifications. It is commonly used in domestic heating setups where flexibility in flue routing is needed to meet installation requirements and building regulations.

Overall, it provides a practical and reliable solution for extending boiler flue systems while maintaining safe and efficient operation.