Aluminum line grille with 3 adjustable perforated panels – 1000 mm – RAL 9016 + acoustically insulated plenum with airflow control damper

Aluminium Linear Diffuser with 3 Adjustable Pattern Blades – 1000 mm – RAL 9016 + Acoustically Insulated Plenum with Airflow Control Damper

The combination of the acoustically insulated plenum and the aluminium linear diffuser with three adjustable pattern blades forms a complete set for quiet, uniform air supply in spaces requiring comfortable and draught-free air distribution, such as larger offices, retail areas, restaurants, and commercial buildings. The linear diffuser is made from extruded aluminium; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are coordinated and function as a single unit: the plenum distributes the supply air evenly along the full 1000 mm slot length, while the linear diffuser accurately distributes the airflow across the slot width via three adjustable deflector profiles. The three-slot design provides a high airflow rate while maintaining excellent air distribution and low noise levels. Thanks to the Coanda effect, the air disperses along the ceiling without draughts, ensuring a comfortable indoor climate in the occupied zone.

Advantages and Features

• Complete set including mounting accessories: The plenum and linear diffuser are designed to work together and are supplied with the necessary galvanised mounting bracket and hex screws.
• Quiet operation through sound-absorbing insulation: The acoustically insulated plenum attenuates noise originating from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows precise balancing during the commissioning phase.
• Draught-free air distribution via the Coanda effect: The linear diffuser directs air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High airflow with uniform distribution: Three profiles ensure even air supply over the full slot length, even at higher volumetric flows.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanised mounting bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser is easily attached from below onto the plenum. The plenum then connects via a round connection to the ventilation duct. Thanks to its compact installation height, the set also fits in ceilings with limited free space. After installation, the linear diffuser’s deflectors can be manually adjusted for horizontal or vertical airflow direction. This set is suitable for offices, retail stores, schools, restaurants, hotels, and other commercial buildings.