Fech-Jet-System® is neither screwed nor riveted. The new construction principle is based on a clamp-connection of the completely welded aluminium outer frame with the window frame. After insertion of the frame, the special profile forming causes a binding adjustment which effects an absolute force-fit bond.

Due to the special profile forming of the pantented frame it is possible to do the installtion completely without edging of the sandwich panels.

Enormous savings of installation time are the result. In practice, time measurements show that Fech-Jet-System® in facades with sandwich panels
can be installed completely within 20 to 30 minutes.