The weather proof round louvre is produced entirely from sturdy aluminum extrusion. These grills have been specifically designed to minimize the entrance of rainwater under normal climatic conditions.
Made of extruded aluminium, powder coated.
Concealed clip fixing or countersunk holes screw fixing.
With galvanized insect mesh 4×4 fixed to the back side of the grille.
The air isn’t able to flow into room if the indoor pressure is smaller than outdoor pressure. It has single-track non-return function.
Ventilation grille the type of external grill (sometimes called as weather louver) is designed to take in air from the exterior or to exhaust used air for comfort zones and industrial zones