The handle is not a very complicated element of woodwork and neither its operation nor assembly, assuming that it has been manufactured correctly, usually does not pose problems. The main division of handles, resulting from the differences in their construction, the material from which they are made, the protection they have, is the one for handles for internal and external use.
However, it is worth knowing here a few details that distinguish the external handles, to make sure that we have chosen a product fully suitable for burglary protection. Answer the questions below:
If just one question is answered, it does NOT mean that your door and house are not fully protected against burglary. Any weakness can be exploited by a potential burglar.
Did you know that an insert that is not perfectly matched in length to the thickness of the door and protrudes from the lock is a real danger? A potential burglar will have no problem to catch, rip, loosen, spoil, and thus get inside with the right tools.
Flex is an insert protection that adapts to the length of the insert - that is, if your insert protrudes up to 15 mm from the plane of the door, you can easily protect it with a Flex handle. Installing such a handle is neither more complicated nor time-consuming (compared to a conventional handle).