The luminaires create a high degree of illuminance on the surface to be illuminated. With their asymmetrical light distribution, they are especially suitable for providing spatial illumination. Luminaires with floodlight characteristics for illuminating squares, entrances, stairs or wide footpaths. When they are used for illuminating ceiling surfaces, the light distribution is suitable above all for illuminating canopies and cantilever roofs, subways or covered entrances. Shallow installation depths and a patented mounting system , ensure simple and economical installation in solid or hollow structures.