INVISIBLE LOCKING SYSTEM
The innovative locking is the first real revolution in hardware systems since introducing the turn/tilt hardware at the beginning of the 1970‘s. For many years Internorm has been using concealed hinges as standard. Additionally, Internorm is applying the same principle to the window frame – no visible hardware.
I-tec locking is currently used with the home pure UPVC & UPVC/aluminium windowKF 500 and is revolutionary in more than one aspect: No visible locking parts on the frame are necessary – instead of protruding locking pegs, integrated flaps ensure the safe locking of the sash. The connections of the locking flaps are carried out invisibly in the hollow chambers of the sash profile.