Pergolas and horizontal louver roof are completely made of aluminum and allows light and breeze when open.Using an electric telescopic engine connection system through parts and aluminum extrusions specially designed, the slats are dosed completely sealed preventing the passage of light and water. When closed the slats become channels that carry the water to the sides that have their own system of canals and water should turn towards the poles where it drains.After the baptism of the strongest typhoon (lichma), the installation project in Shanghai did not have any problems, enough to prove the stability of the electric shed.