Cal - SAFETY CALIPERS FOR SLIDING DOORS AND WINDOWS COFFEE - CALTIGREBROWN

Cal - SAFETY CALIPERS FOR SLIDING DOORS AND WINDOWS COFFEE - CALTIGREBROWN

Well-known sliding locking mechanism since 1990. 
It is mounted from one in the two corners of the sliding sash on the side of the lock and is 5-8 mm from the upper and lower case. 
When we secure it, the teeth simply touch the case, but if an attempt is made to rupture, the sheet is wedged and is not violated even with a crowbar because it works with the feedback ie. with the power of the burglar.
A product also recommended by insurance companies and even the Police against burglaries, for sliding balcony doors and windows.