Gunnar Sellien, the architect in charge of the project at the firm of Knerer und Lang, which was commissioned with the renovation. However, this project, which started in 2016, involved more than just [...] characterised by around 1060 pivoting casement windows, which have been restored in a recent renovation project – in line with the preservation of historical monuments but without sacrificing modern requirements [...] a possible system provider together with the architects. Sellien, the architect in charge of the project, emphasised how impressed he was by the commitment of the Swiss company, which was prepared to develop