150mm Duct Size Timer IPX4 airRoxy fans are designed using the newest innovations and possibilities given by the modern technology. Modular construction: Using the modular construction and production unification, give us the flexibility in modifying the electronic controllers both with the direct or alternating current sensors, and turbines. Innovative solutions: Only airRoxy fans, among other products available on the market in this sector, have the turbines with changeable paddle geometry. It gives a large airflow with low acoustic pressure.