Flat Oval to Rectangular Transition Piece

The Flat Oval to Rectangular Transition Piece is a ducting accessory designed to connect a flat oval duct to a rectangular duct run, creating a smooth and secure transition between different duct shapes. It ensures airflow moves efficiently from the flat oval main duct into the rectangular section while maintaining system performance and reducing turbulence. Made from durable galvanised steel, it provides structural stability and long-term reliability. Ideal for both standard and custom HVAC layouts, this transition piece simplifies installation, allows integration of mixed duct geometries, and ensures consistent, efficient airflow throughout the system. Fits into shallow ceiling voids where round ducting is too tall, maintaining the high-volume capacity required for efficient HVAC performance Fabricated from premium hot-dip galvanised steel for great structural rigidity and long-term corrosion resistance The seam provides a robust permanent seal Ideal for exposed-ceiling designs in commercial and high-end retail spaces Fittings supplied small end as standard to fit into straight duct Apart from stiffening requirements, flat oval ducts follow the same construction standards across all pressure ranges defined in DW144 In some cases, additional stiffening is required in the form of tie bars which are fitted in line with DW144