Aluminum line grille with 1 adjustable perforated panel – 1500 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 1 Adjustable Pattern Blade – 1500 mm – RAL 9010 + Insulated Plenum with Air Volume Control Damper

The combination of the insulated plenum and the aluminium linear diffuser with one adjustable pattern blade forms a complete set for quiet, even air supply in spaces where comfortable and draught-free air distribution is desired, such as offices, retail stores, restaurants, and hotels. The linear diffuser is made from extruded aluminium in RAL 9010; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are perfectly matched and work together seamlessly: the plenum evenly distributes the supply air along the entire slot length of 1500 mm, while the linear diffuser precisely directs the airflow via the adjustable deflector profile. Thanks to the Coanda effect, the air flows along the ceiling without draught, ensuring a comfortable indoor climate in the occupied zone.

Advantages and Features

• Complete set, including mounting accessories: The plenum and linear diffuser are designed to work together and come supplied with the necessary fixing bracket and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum attenuates noise from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The integrated air volume control damper allows fine-tuning during the commissioning phase.
• Draught-free air distribution via the Coanda effect: The linear diffuser directs air along the ceiling to ventilate the occupied zone comfortably without direct air jets.

Installation and Applications

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