Aluminum line grille with 3 adjustable perforated panels – 2000 mm – RAL 9005 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 3 Adjustable Pattern Blades – 2000 mm – RAL 9005 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with three adjustable pattern blades offers a complete solution for quiet, uniform air supply in spaces where comfortable, draught-free air distribution is desired, such as large office areas, retail environments, restaurants, and commercial buildings. The linear diffuser is made from extruded aluminium in RAL 9005; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are perfectly matched and operate as a single unit: the plenum distributes the supply air evenly along the entire 2000 mm slot length, while the linear diffuser accurately directs the airflow across the slot width via three adjustable deflector profiles. The triple-slot design delivers a high airflow rate while maintaining excellent air distribution and a low noise level. Thanks to the Coanda effect, the air disperses smoothly along the ceiling without draughts, ensuring a comfortable indoor climate within the occupied zone.

Benefits and Features

• Complete set including fixing accessories: The plenum and linear diffuser are designed to work together and come supplied with the necessary fixing bracket and hex screws.
• Quiet operation through sound-absorbing insulation: The insulated plenum reduces noise from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows accurate balancing during commissioning.
• Draught-free air distribution via Coanda effect: The linear diffuser directs air along the ceiling so the occupied zone is ventilated comfortably without direct air jets.
• High airflow with uniform distribution: Three profiles ensure even air supply across the entire slot length, even at higher volume flows.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanised fixing bracket. For connection, the air intake deflector is rotated 90°, after which the diffuser is easily secured to the underside of the plenum. The plenum then connects via a round spigot to the ventilation duct. Due to its compact build height, the set fits in ceilings with limited available space. After installation, the diffuser’s deflectors can be manually adjusted to achieve either horizontal or vertical air discharge direction. This set is suitable for offices, retail spaces, schools, restaurants, hotels, and other commercial buildings.