Aluminum line grille with 3 adjustable perforated panels – 2000 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 3 Adjustable Pattern Blades – 2000 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with three adjustable pattern blades forms a complete system for quiet, uniform air supply in spaces where comfortable, draught-free air distribution is desired, such as larger office areas, retail stores, restaurants, and commercial buildings. The linear diffuser is made from extruded aluminium in RAL 9010; the plenum is constructed from galvanized steel with sound-absorbing insulation. Both components are precisely matched and function as a single unit: the plenum evenly distributes the supply air along the full 2000 mm slot length, while the linear diffuser accurately directs the airflow over the slot width via three adjustable deflector profiles. The three-slot design provides a high airflow capacity while maintaining excellent air distribution and low noise levels. Thanks to the Coanda effect, the air spreads along the ceiling without creating draughts, ensuring a comfortable indoor climate in the occupied zone.

Benefits and Features

• Complete set including fastening accessories: The plenum and linear diffuser are designed to work together and are supplied with the necessary mounting bracket and hex 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 balancing during commissioning.
• Draught-free air distribution via Coanda effect: The linear diffuser directs air along the ceiling, ventilating the occupied zone comfortably without direct air jets.
• High airflow with uniform distribution: Three profiles ensure even air supply over the full slot length, even at higher flow rates.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanized mounting bracket. For connection, the air inlet deflector is rotated 90°, after which the diffuser is simply attached from underneath to the plenum. The plenum then connects to the ventilation duct via a round connection. Thanks to the compact installation height, the unit also fits ceilings with limited free space. Once installed, the diffuser deflectors can be manually adjusted for horizontal or vertical airflow direction. The system is suitable for offices, shops, schools, restaurants, hotels, and other commercial buildings.