Due to their small total height the ceiling linear diffusers are suitable for installation in low ceiling cavities, e.g. in suspended ceilings. They provide good mixing and rapid reduction of temperature difference and the rate of supplied air. They are connected to the air duct system by a plenum box and flexible air ducts. The diffuser type TLD is intented for installation in premises with a height of approximately from 2,60 m to 4,00 m. The recommended temperature difference of the supplied air is ±10˚ С. The air supply direction can be changed in accordance with the desired room conditions. The stable airflow of the ceiling linear diffusers type TLD makes them suitable for use in systems with constant or variable volumetric flow.