What is a rim lock used for?

A rim lock is a type of lock that is typically used as a supplemental locking mechanism for various doors, particularly exterior ones. It is mounted on the surface of the door and serves to provide additional security alongside a primary lock, such as a deadbolt or knob lock. This function is essential for enhancing the door's security capability because it creates an extra barrier against unauthorized access.

While a rim lock can be aesthetically pleasing in certain designs, its primary role is not decorative. It does not invalidate safety measures but rather complements existing locks to improve safety. Therefore, understanding its function as a supplemental locking system is important for personnel involved in fire safety and emergency situations, as it can directly impact entry and egress during emergencies.