IN LINE fans with circular cross-section and external casing made of flame-retardant polypropylene. Single-phase motors 230V/30Hz, 2 speeds with long-life bearings. Degree of protection IPX4. Airflow from 100 to 335 m3/h. Operating temperature up to 60°C. Possibility of installing 2 fans in parallel for double the airflow with the same available static pressure or in series for double the available static pressure with the same airflow. Suitable for ventilation in bathrooms, kitchens, humid areas, apartments, holiday homes, shops, cafes.