Aluminum line grille with 2 adjustable perforated panels – 2000 mm – RAL 9005 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Pattern Blades – 2000 mm – RAL 9005 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear diffuser with two adjustable pattern blades forms a complete system for silent, uniform air supply in spaces where comfortable and draught-free air distribution is desired, such as offices, retail environments, meeting rooms, and hotel lobbies. The linear diffuser is made of extruded aluminium in RAL 9005; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are engineered to work together as one unit: the plenum distributes the supply air evenly along the entire 2000 mm slot length, while the linear diffuser evenly directs the airflow via two adjustable deflector profiles. The dual-slot design allows for higher air volumes at a low noise level. Thanks to the Coanda effect, the air flows along the ceiling without draughts, ensuring a comfortable indoor climate within the occupied zone.

Benefits and Features

• Complete set including mounting accessories: The plenum and linear diffuser are designed to function together and come supplied with the necessary mounting bracket and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum reduces duct noise and minimises sound emission.
• Precisely adjustable airflow: The integrated airflow control damper allows fine-tuning during commissioning.
• Draught-free air distribution via Coanda effect: The linear diffuser directs air along the ceiling, providing comfortable ventilation without direct air jets in the occupied zone.
• Higher air capacity at low noise levels: Two parallel deflector profiles enable higher air volumes without noticeable noise increase.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanised mounting bracket. For connection, the air intake elbow is rotated 90°, after which the diffuser is easily affixed from underneath. The plenum then connects via a round outlet to the ventilation duct. Due to its compact build height, the set fits into ceilings with limited free space. After installation, the diffuser’s deflectors can be manually adjusted for horizontal or vertical air discharge direction. The set is suitable for use in offices, shops, schools, restaurants, hotels, and other commercial buildings.