Aluminum line grille with 3 adjustable perforated panels – 1000 mm – RAL 9005 + insulated plenum with airflow control damper

Aluminium linear grille with 3 adjustable blade sets – 1000 mm – RAL 9005 + insulated plenum with air volume control damper

The combination of the insulated plenum and the aluminium linear grille with three adjustable blade sets offers a complete solution for silent, uniform air supply in spaces where comfortable, draught-free air distribution is required, such as larger offices, retail areas, restaurants, and commercial buildings. The linear grille is manufactured from extruded aluminium in RAL 9005; the plenum is made from galvanised steel with sound-absorbing insulation. Both components are perfectly matched and function as one unit: the plenum evenly distributes the supply air along the entire 1000 mm slot length, while the linear grille precisely directs the airflow across the slot width via three adjustable deflector profiles. The three-slot design provides a high airflow rate while maintaining excellent air distribution and low noise levels. Thanks to the Coanda effect, the air disperses along the ceiling without causing draughts, ensuring a comfortable indoor climate in the occupied zone.

Advantages and Features

• Complete set, including mounting hardware: The plenum and linear grille are designed to work seamlessly together and are supplied with the necessary fixing bracket and Allen screws.
• Quiet operation through sound-absorbing insulation: The insulated plenum attenuates noise from the duct and minimises sound disturbance.
• Precisely adjustable airflow: The built-in air volume control damper allows for exact balancing during commissioning.
• 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 airflow with uniform distribution: Three profiles ensure an 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 using the supplied galvanised fixing bracket. For connection, the air inlet deflector is rotated 90°, after which the grille is easily attached from below onto the plenum. The plenum then connects to the ventilation duct via a round connection. Thanks to its compact installation height, the set is also suitable for ceilings with limited free space. After installation, the grille deflectors can be manually adjusted to achieve horizontal or vertical airflow directions. The set is ideal for use in offices, retail spaces, schools, restaurants, hotels, and other commercial buildings.