Light-efficient construction made of a rigid light-absorbing tunnel. Lighting thanks to the Miro Silver coating on the surface of the tunnel. Recommended for rooms under a sloping roof, where it is not possible to install roof windows. It is possible to conduct light up to a distance of 6 meters with the use of extensions in ZTR. Resistant to damage and dirt due to the easily washable coating on the tempered glass in the roof element. Aesthetics of connection to the roof thanks to the flat surface. Aesthetic and functional values thanks to the available additional equipment: replaceable patterns of diffusing glass, replaceable patterns of ceiling rings and a set of electric lighting ZTL.