Aluminum line grille with 2 adjustable perforated panels – 1000 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Blade Plates – 1000 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with two adjustable blade plates provides a complete solution for quiet, 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 9010; the plenum is constructed from galvanized steel with sound-absorbing insulation. Both components are designed to work seamlessly together: the plenum evenly distributes supply air across the full 1000 mm slot length, while the linear diffuser ensures uniform airflow distribution via two adjustable deflector profiles. The dual-slot design allows for higher air volumes at low noise levels. Thanks to the Coanda effect, the air flows 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 engineered to operate as one unit and come with the necessary mounting bracket and hex screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum attenuates noise from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows for accurate balancing during commissioning.
• 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.
• Higher air capacity at low noise levels: Two parallel working deflector profiles enable higher airflows without noticeable noise increase.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanized mounting bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser is simply fixed from beneath 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 into 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, shops, schools, restaurants, hotels and other commercial buildings.