Aluminum line grille with 3 adjustable perforated panels – 1250 mm – RAL 9016 + insulated plenum with airflow control damper

Aluminium linear grille with 3 adjustable blade patterns – 1250 mm – RAL 9016 + insulated plenum with airflow control damper

The combination of the insulated plenum and the aluminium linear grille with three adjustable blade patterns forms a complete set for quiet, uniform air supply in spaces where comfortable and draught-free air distribution is desired, such as larger offices, retail areas, restaurants and commercial buildings. The linear grille is made from extruded aluminium; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are perfectly matched and function as a single unit: the plenum evenly distributes the supply air along the entire 1250 mm slot length, while the linear grille precisely directs the airflow through three adjustable deflector profiles across the slot width. The three-slot design ensures a high air volume while maintaining excellent air distribution and low noise levels. Thanks to the Coanda effect, the air flows smoothly along the ceiling without draughts, providing a comfortable indoor climate in the occupied zone.

Advantages and features

• Complete set, including mounting accessories: The plenum and linear grille are designed to work seamlessly together and come with the required mounting bracket and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum reduces noise from the ductwork, minimising sound disturbances.
• Precisely adjustable airflow: The integrated airflow control damper allows for accurate adjustment during commissioning.
• Draught-free air distribution through Coanda effect: The linear grille directs the air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High flow rate with uniform distribution: Three profiles ensure even air supply along the entire slot length, even at higher volume flows.

Installation and applications

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