Aluminum line grille with 2 adjustable perforated panels – 2000 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 2 Adjustable Pattern Blades – 2000 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with two adjustable pattern blades forms a complete system for quiet, uniform air supply in spaces where comfortable, draught-free air distribution is required, such as offices, retail stores, meeting rooms, and hotel lobbies. 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 fully coordinated and operate as a single unit: the plenum evenly distributes the supply air across the entire slot length of 2000 mm, while the linear diffuser uniformly directs the airflow through two adjustable deflector profiles. The dual slot design enables higher air volumes at low noise levels. Thanks to the Coanda effect, the air flows along the ceiling without draughts, ensuring a comfortable indoor climate in the occupied zone.

Benefits and Features

• Complete set, including mounting hardware: The plenum and linear diffuser are designed to work together and are supplied with the necessary fixing 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 allows for accurate adjustment during the commissioning phase.
• 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.
• Higher air capacity at low noise levels: Two parallel-operating deflector profiles enable higher flow rates without a noticeable increase in noise generation.

Installation and Applications

The linear diffuser is mounted from below onto the plenum via the supplied galvanised fixing bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser is easily attached from underneath to the plenum. The plenum then connects to the ventilation duct through a circular connection. Due to its compact height, the set also fits into ceilings with limited free space. After installation, the deflectors of the linear diffuser can be manually adjusted to achieve either horizontal or vertical airflow direction. This set is suitable for use in offices, shops, schools, restaurants, hotels, and other commercial buildings.