WHALE Air Ducting Straight Fitting 90x90, designed for use with DX9500 Heating Ducting. This high-quality straight fitting allows for a secure and efficient connection between duct sections, ensuring smooth airflow and consistent heating performance. Its 90x90 dimensions make it easy to install, offering a reliable solution for maintaining optimal functionality in your DX9500 heating system. Perfect for use in caravans and motorhomes, it helps keep your heating setup running smoothly.