Aluminum line grille with 3 adjustable perforated panels – 1500 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 3 Adjustable Blade Patterns – 1500 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear diffuser with three adjustable blade patterns forms a complete set for quiet, 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 diffuser is made from extruded aluminium in RAL 9010; the plenum is constructed from galvanized steel with sound-absorbing insulation. Both components are coordinated to work seamlessly as one unit: the plenum distributes supply air evenly along the full slot length of 1500 mm, while the linear diffuser precisely directs the airflow across the slot width via three adjustable deflector blades. The three-slot design delivers a high airflow rate 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 environment within the occupied zone.

Advantages and Features

• Complete set including mounting accessories: The plenum and linear diffuser are designed to work together and come with the necessary mounting bracket and Allen screws.
• Quiet operation through sound-absorbing insulation: The insulated plenum attenuates 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 via the Coanda effect: The linear diffuser directs air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High airflow with uniform distribution: Three blades ensure even air supply across the entire slot length, even at higher volumetric flows.

Installation and Applications

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