Turbo inline mixed-flow fans combine the airflow capacity of an axial fan with the pressure capability of a centrifugal fan. Their compact plastic casing and mixed-flow impeller provide powerful supply or extract ventilation while fitting into restricted ceiling spaces and round duct systems. Depending on the selected variant, AC or energy-efficient EC motor options are available, with speed control to match the required duty. The removable motor and impeller assembly supports straightforward servicing without dismantling the duct run.