A very exclusive shading system that is suitable for shading of factory and office buildings, however it is getting more and more popular on widows of modern newly built private houses. Beside shading, noise- and wind-protection, its greatest advantage is that its laths can be moved separately, so the angle of the laths determines how much light comes through. It can be manually or electrically driven. In case of electrical drive the wind-, light-, temperature-detector and the automatic timing function make its use even more convenient.