Aluprof has created its overlapping system on the basis of the MB-SR50N mullion and transom wall. The system allows to combine construction materials having different characteristics and looking different from the outside and inside. External aluminium elements ensure durable protection of the internal skeletal construction against weather conditions. Two types of materials can be used for the building of the load-bearing structure: wooden constructional profiles give the interior a specific character due to the natural beauty of wood, which creates a pleasant and cosy atmosphere, while steel profiles may be required for the execution of the industrial-type of décor or when there are large distances between supports.