Very well-known locking mechanism for sliding doors since 1990. It is installed at one of the two corners of the sliding panel on the locking side and is 5-8 mm from the top and bottom frame.

When we lock it, the teeth simply touch the frame. If an attempt is made to break in, the panel wedges and cannot be forced open, not even with a crowbar, as it works with feedback, i.e., with the burglar's force.