Using our experience we have created the new universal semi-automatic bolt.
Easy to install, cheap and reliable, it operates with a simple hand movement and closes automatically..
The patented blocking mechanism can be positioned at the required height simply by varying the length of the rods linked to the metal points.
Available both in single and double metal point versions, it can be installed on all  frames which have key-ways of 16, 18, 20 mm (both European and non-European rooms).
Available also for 3rd door panel and folding doors.