Lightshafts

Lightshafts for basement windows are a simple solution to increase the amount of the light entering the basement. Easy to install,  low cost (40% of the cost of traditional concrete duct), easy to keep clean. Body design allows for total tightness at the connection with the wall of the building, and outflow with siphon and seal can be used to connect lightshaft to the sewer. Grate can be chosen depending on the load  (for pedestrians or with the possibility of passing cars), and depending on the design of the building - spanners, lattice.