Aluminum line grille with 3 adjustable perforated panels – 1000 mm – RAL 9010 + insulated plenum with airflow control damper

Aluminium Linear Diffuser with 3 Adjustable Pattern Blades – 1000 mm – RAL 9010 + Insulated Plenum with Airflow Control Damper

The combination of the insulated plenum and the aluminium linear diffuser with three adjustable pattern blades forms a complete solution for quiet, even air supply in spaces where comfortable, draught-free air distribution is desired, such as larger office areas, retail spaces, restaurants, and commercial buildings. The linear diffuser is made of extruded aluminium in RAL 9010; the plenum is constructed from galvanised steel with sound-absorbing insulation. Both components are designed to work together seamlessly: the plenum evenly distributes the supply air along the full slot length of 1000 mm, while the linear diffuser precisely directs the airflow across the slot width via three adjustable deflector profiles. The three-slot design delivers a high airflow rate while maintaining excellent air distribution and low noise levels. 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 designed to work as a system and come supplied with the necessary fixing bracket and hex screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum attenuates noise from the ductwork, minimising acoustic 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 jets.
• High airflow with uniform distribution: Three profiles ensure even air delivery along the entire slot length, even at higher volume flows.

Installation and Applications

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