The 220 x 90mm horizontal 45-degree bend provides a gradual change of direction within a flat PVC duct run. Its shallow angle helps maintain airflow velocity and creates less turbulence than a sharper bend, making it useful in longer runs or systems where fan performance and noise are important. Manufactured from lightweight, fire-resistant PVC, the fitting integrates directly with the matching rectangular duct system. It is ideal for routing ventilation around cabinetry, framing and other obstructions while keeping the installation compact and easy to conceal.