Aluminum line grille with 3 adjustable perforated panels – 1250 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Grille with 3 Adjustable Pattern Blades – 1250 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear grille with three adjustable pattern blades forms a complete set for quiet, even 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 made from extruded aluminium in RAL 9010; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are precisely matched and function as a single unit: the plenum evenly distributes the supply air along the full slot length of 1250 mm, while the linear grille accurately distributes the airflow via three adjustable deflector profiles across the slot width. 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 flows 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 fixing bridge and hex screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum attenuates noise from the ductwork, ensuring minimal sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows for fine-tuning during the commissioning phase.
• Draught-free air distribution via the Coanda effect: The linear grille directs the air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High airflow 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 below onto the plenum using the supplied galvanised mounting bridge. For connection, the air inlet deflector is rotated 90°, after which the grille is simply attached from underneath to 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 deflectors of the linear grille can be manually adjusted to achieve either horizontal or vertical airflow direction. This set is suitable for offices, retail stores, schools, restaurants, hotels, and other commercial buildings.