This tender covers the supply and installation of lightweight metal (aluminium) windows and doors as part of the overall renovation of Kaserne Auenfeld's guardhouse (Wachtgebäude), which comprises a basement, ground floor, and upper floor. The scope includes the production and installation of 31 windows and 4 doors in lightweight metal, as well as approximately 42 m² of post-and-rail (Pfostenriegel) façade. All ground-floor façade elements must meet security requirement RC3, and integrated sun protection is included within the deep reveals of the windows and doors.