Additional locking point near to the corner (127 mm) is a big advantage
to have more gasket pressure and less heat loss.
The roller cams can be adjusted in order to change gasket pressure
0,8 mm (- / +) by using a 4 mm allen wrench.
Special design and easy connection with stay arm to have faster and easier
montage of the windows. In addition, all dimensions of the stay arm c
can be screwed to be fixed directly to the profile. This way the movement
of the middle lock is limited.