Aluminum line grille with 1 adjustable perforated panel – 500 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 1 Adjustable Pattern Blade – 500 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and aluminium linear diffuser with one adjustable pattern blade forms a complete set for quiet, even air supply in spaces where a comfortable and draught-free air distribution is desired, such as offices, retail stores, restaurants, and hotels. The linear diffuser is manufactured from extruded aluminium in RAL 9010; the plenum is made from galvanised steel with sound-absorbing insulation. Both components are designed to work seamlessly together: the plenum evenly distributes the supply air along the full 500 mm slot length, while the linear diffuser precisely directs the airflow via the adjustable deflector profile. Thanks to the Coanda effect, the air spreads 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 engineered to function as a unit and are supplied with the necessary mounting bridge and Allen screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum reduces noise from the ductwork, minimising sound disturbances.
• Precisely adjustable airflow: The built-in airflow control damper allows accurate adjustment during commissioning.
• Draught-free air distribution via the Coanda effect: The linear diffuser directs airflow along the ceiling, ventilating the occupied zone comfortably without direct air jets.

Installation and Applications

The linear diffuser is mounted from below onto the plenum using the supplied galvanised mounting bridge. For connection, the air inlet deflector is rotated 90°, after which the diffuser is easily fixed from underneath onto the plenum. The plenum then connects to the ventilation duct via a circular connection. Thanks 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 for horizontal or vertical airflow direction. This set is suitable for offices, retail spaces, schools, restaurants, hotels, and other commercial buildings.