Aluminum line grille with 1 adjustable perforated panel – 1250 mm – RAL 9016 + insulated plenum with airflow control damper

Aluminium linear grille with 1 adjustable pattern blade – 1250 mm – RAL 9016 + insulated plenum with airflow control damper

The combination of the insulated plenum and the aluminium linear grille with a single adjustable pattern blade forms a complete set for quiet, uniform air supply in spaces where comfortable and draught-free air distribution is desired, such as offices, retail stores, restaurants, and hotels. The linear grille is made from extruded aluminium; the plenum consists of galvanised steel with sound-absorbing insulation. Both components are matched and function as a single unit: the plenum evenly distributes the supply air across the entire slot length of 1250 mm, while the linear grille 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.

Advantages and features

• Complete set, including fixing elements: The plenum and linear grille are designed to work together and are supplied with the necessary fixing bracket and hex screws.
• Quiet operation due to sound-absorbing insulation: The insulated plenum dampens noise from the ductwork, minimising sound disturbance.
• Precisely adjustable airflow: The built-in airflow control damper allows accurate adjustment during commissioning.
• Draught-free air distribution via the Coanda effect: The linear grille directs air along the ceiling, ventilating the occupied zone comfortably without direct air jets.

Installation and applications

The linear grille is mounted from below onto the plenum using a supplied galvanised fixing bracket. For connection, the 90° air intake deflector is rotated, after which the grille is simply attached from below to the plenum. The plenum then connects via a circular spigot to the ventilation duct. Thanks to the compact build height, the set fits into ceilings with limited clearances. After installation, the grille deflectors can be manually adjusted for horizontal or vertical airflow direction. This set is suitable for use in offices, retail, schools, restaurants, hotels, and other commercial buildings.