Ceiling diffuser DOS-R is a round ventilation diffuser designed for supply and exhaust air in modern HVAC systems. It provides uniform and quiet airflow distribution, making it suitable for spaces with ceiling heights from 2.6 to 4 meters. The diffuser is made of high-quality galvanized steel with a durable powder-coated finish, ensuring corrosion resistance and a long service life. DOS-R is ideal for use in offices, commercial buildings, and public facilities. It is compatible with plenum boxes and airflow control accessories, ensuring flexible installation and efficient ventilation performance.