As a part of the 'Friends' complex, two 53-metre towers have been erected in proximity to Munich´s Hirschgarten, each of them featuring 130 apartments. Their modern façade design transcends into a structured, aesthetic appearance in the interiors. High-quality fittings and generous ceiling heights between 2.8 m and 4.2 m additionally improve the comfort of living.
Lindner AG developed custom entrance doors for this project, featuring intruder protection of resistance class RC3 at a height of 2.5 m. Even though the final execution was with a smaller width, the specifically developed door system was for the RC3 classification at a width of 1,45 m.  Fitted into closed wooden frames, the doors feature a secure multi-point locking mechanism and hidden door hinges that have been integrated in the frames. Additionally, they have smoke protection properties and offer fire protection according to T30. The contract also included the fitting of doors in the apartment interiors.