Aluminum line grille with 3 adjustable perforated panels – 500 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Grille with 3 Adjustable Louver Blades – 500 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear grille with three adjustable louver blades provides a complete set for quiet, uniform air supply in spaces where comfortable and draught-free air distribution is desired, such as larger office areas, retail spaces, restaurants, and commercial buildings. The linear grille is made of extruded aluminium in RAL 9010; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are designed to work together as a single unit: the plenum evenly distributes the supply air along the full slot length of 500 mm, while the linear grille precisely directs the airflow via three adjustable deflector profiles across the slot width. The three-slot design delivers a high volume flow while maintaining excellent air distribution and 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 come with the necessary mounting bracket and Allen screws.
• Quiet operation through sound-absorbing insulation: The insulated plenum dampens noise from the duct, minimising sound disturbance.
• Precisely adjustable airflow: The built-in airflow control damper allows for accurate adjustment during balancing.
• Draught-free air distribution via Coanda effect: The linear grille directs air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High volume flow with uniform distribution: Three profiles ensure even air supply across the full slot length, even at higher airflow rates.

Installation and Applications

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