Burglary protection
As the descending window fronts are always operated electromechanically and cannot be opened manually, no mechanical locking is required here, unlike sliding windows and pivot doors. Due to the size and weight, the burglary protection is essentially limited to the resistance class of the glass. The system itself has no resistance class (not tested).
| Resistance class | Glass | Safety | Resistance time |
| RC 1 | P2A | Simple attacks with the simplest tool | 3 minutes |
| RC 2 | P4A | Occasional offenders with light tools | 3 minutes |
| RC 3 | P5A | Habitual perpetrators | 5 minutes |
| RC 4 | P6A | Experienced perpetrators with sawing and impact tools | 10 minutes |
| RC 5 | P7A | Same as above, with electric tools | 15 minutes |
| RC 6 | P8A | Same as above, with powerful tools | 20 minutes |
In addition to the safety classes listed above, bulletproof glazing is also possible. The resistance class of the glasses here goes from BR1 (handgun with 9 mm calibre) up to the rifles with calibre of 12/70.