Cut-out exterior layer in French bank 
The solar protection of the west facade of this bank in Toulouse is settled as a cut-out exterior layer. It is made of an aerated aluminium panel, coated on both sides with two sheets of aluminium, a lightweight and highly rigid material. Its operability is achieved by rotating two of these elements through a common vertical axis. The cut doesn’t follow a regular parallelogram geometry, but has some protrusions and gaps that fit when closed, achieving a total protection.