Aluminum line grille with 2 adjustable perforated panels – 500 mm – RAL 9016 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Deflector Blades – 500 mm – RAL 9016 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear diffuser with two adjustable deflector blades provides a complete solution for quiet, uniform air supply in spaces where comfortable, draught-free air distribution is required, such as offices, retail environments, meeting rooms, and hotel lobbies. The linear diffuser is manufactured from extruded aluminium; the plenum is made of galvanized steel with sound-absorbing insulation. Both components are coordinated and function as one unit: the plenum evenly distributes the supply air along the entire 500 mm slot length, while the linear diffuser evenly directs the airflow through the two adjustable deflector profiles. The twin-slot design allows higher air volumes at low noise levels. Thanks to the Coanda effect, the air spreads along the ceiling without causing draughts, 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 with the necessary fixing bracket and hex screws.
• Quiet operation thanks to sound-absorbing insulation: The insulated plenum reduces noise from the ductwork, minimising noise disturbances.
• Precisely adjustable airflow: The integrated airflow control damper enables fine-tuning during commissioning.
• Draught-free air distribution via Coanda effect: The linear diffuser directs the air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• Higher air capacity at low noise levels: Two parallel operating deflector profiles allow higher airflows without noticeable increase in noise generation.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanized fixing bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser is simply fixed 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 also fits in ceilings with limited free space. After installation, the deflectors of the linear diffuser can be manually adjusted for horizontal or vertical airflow direction. The set is suitable for offices, shops, schools, restaurants, hotels, and other commercial buildings.