Aluminum line grille with 2 adjustable perforated panels – 1500 mm – RAL 9016 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Deflector Blades – 1500 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 forms a complete unit for silent, 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 made from extruded aluminium; the plenum is constructed from galvanized steel with sound-absorbing insulation. Both components are matched and function as a single unit: the plenum evenly distributes the supply air along the entire slot length of 1500 mm, while the linear diffuser distributes the airflow uniformly through its two adjustable deflector profiles. The dual-slot design allows for higher air volumes at low noise levels. Thanks to the Coanda effect, the air spreads along the ceiling without draughts, creating a comfortable indoor climate within the occupied zone.

Benefits and Features

• Complete set, including mounting accessories: The plenum and linear diffuser are designed to work together and come supplied with the necessary mounting bracket and Allen screws.
• Quiet operation with sound-absorbing insulation: The insulated plenum reduces noise from the ductwork while minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper allows for accurate balancing during the commissioning phase.
• Draught-free air distribution via Coanda effect: The linear diffuser directs air along the ceiling, ensuring comfortable ventilation of the occupied zone without direct air jets.
• Higher air capacity at low noise levels: Two parallel deflector profiles enable higher airflow volumes without noticeable increase in noise generation.

Installation and Applications

The linear diffuser is mounted underside onto the plenum via a supplied galvanized mounting bracket. For connection, the air intake deflector is rotated 90°, after which the diffuser is simply fixed to the plenum from below. The plenum then connects to the ventilation duct via a round outlet. Thanks to its compact installation height, the unit is suitable for ceilings with limited free space. After installation, the diffuser deflectors can be manually adjusted for horizontal or vertical airflow direction. The set is suitable for use in offices, shops, schools, restaurants, hotels, and other commercial buildings.