Waterproof louvres are actually the exterior ventilation grilles that make ventilation possible. Provided with a type of blades known as “anti-drip” or “anti-rain”, they circulate the air, while preventing water or snow penetration, in case of bad weather.

External ventilation grilles, used both in large and small sizes, are equipped with different types of blades sharing the same features. Also referred to as facade grilles, they can be equipped with both fixed and mobile blades.

All the goods in this range are equipped with wire mesh for protection against leaves, small birds or other items that may enter the ventilation system (paper, plastic bags etc.).


Due to the large free surfaces and therefore the high variation of the air flow range, external grilles are installed on facades or on fresh air inlet tubes.