Aluminum line grille with 2 adjustable perforated panels – 1500 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium linear grille with 2 adjustable deflector blades – 1500 mm – RAL 9010 + insulated plenum with airflow control damper

The combination of the insulated plenum and the aluminium linear grille with two adjustable deflector blades forms a complete set for quiet, even 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 grille is made from extruded aluminium in RAL 9010; the plenum is constructed from galvanized steel with sound-absorbing insulation. Both components are designed to work together seamlessly: the plenum evenly distributes supply air along the full slot length of 1500 mm, while the linear grille distributes the airflow evenly via two adjustable deflector profiles. The two-slot design enables higher airflow volumes at low noise levels. Thanks to the Coanda effect, the air spreads along the ceiling without draughts, ensuring a comfortable indoor climate in the occupied zone.

Benefits and Features

• Complete set, including mounting accessories: The plenum and linear grille are designed to work together and are supplied with the necessary mounting bracket and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum attenuates noise from the duct while minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows accurate fine-tuning during commissioning.
• Draught-free air distribution via Coanda effect: The linear grille directs the air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• Higher airflow capacity at low noise levels: Two parallel operating deflector profiles enable higher volumes without noticeable increases in noise generation.

Installation and Applications

The linear grille 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 grille can be easily fixed from below onto the plenum. The plenum then connects via a round connection to the ventilation duct. Thanks to the compact build height, the set also fits in ceilings with limited free space. After installation, the deflectors of the linear grille can be manually adjusted for either horizontal or vertical airflow direction. The set is suitable for use in offices, shops, schools, restaurants, hotels and other commercial buildings.