This is a unitized façade system, which means a completely prefabricated curtain wall solution. A panel is used with all the onsite mounting benefits that panels can have. What is more it is light, so big components can be used that are perhaps two stories high. During preassembly, all the façade layers can be incorporated into the same frame, and thus into a single panel. The glass does not need to be related to transparency; it can simply cover the blind area of the façade to provide a continuous image from the outside, as we normally do with the slab edge front.