Ceiling diffuser DOS-Q is a square ventilation diffuser designed for air supply and exhaust in HVAC systems. It ensures uniform and quiet airflow distribution, improving indoor comfort and efficiency. The diffuser is made of galvanized steel with a durable powder-coated finish, offering long-lasting protection against corrosion. Suitable for installation in suspended or plasterboard ceilings and ideal for rooms with a ceiling height of 2.6 to 4 meters. Perfect for offices, commercial buildings, and public facilities. Compatible with plenum boxes and air volume control dampers.