Aluminum line grille with 2 adjustable perforated panels – 1000 mm – RAL 9016 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Pattern Plates – 1000 mm – RAL 9016 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with two adjustable pattern plates forms a complete solution for quiet, uniform air supply in spaces where comfortable and draught-free air distribution is required, such as offices, retail environments, meeting rooms, and hotel lobbies. The linear diffuser is made of extruded aluminium; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are coordinated to function as a single unit: the plenum evenly distributes the supply air along the full 1000 mm slot length, while the linear diffuser uniformly directs the airflow through two adjustable deflector profiles. The double-slot design allows for higher airflow rates at a low noise level. Thanks to the Coanda effect, the air flows along the ceiling, preventing draughts and ensuring a comfortable indoor climate in the occupied zones.

Advantages and Features

• Complete set including mounting accessories: The plenum and linear diffuser are designed to work together and delivered with the required mounting bracket and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum reduces noise from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The integrated airflow control damper enables accurate balancing during the commissioning phase.
• Draught-free air distribution via Coanda effect: The linear diffuser directs the air along the ceiling, ventilating the occupied zone comfortably without direct air streams.
• Higher airflow capacity at low noise levels: Two parallel working deflector profiles permit increased flow rates without a noticeable rise in noise generation.

Installation and Applications

The linear diffuser is mounted underneath the plenum using the supplied galvanised mounting bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser can be easily attached to the plenum from below. The plenum then connects to the ventilation duct via a round connection. Thanks to its compact construction height, the set fits into ceilings with limited free space. After installation, the diffuser deflectors can be manually adjusted to direct airflow horizontally or vertically. This set is suitable for use in offices, shops, schools, restaurants, hotels, and other commercial buildings.