What type of lock is typically found on the interior surface of a door?

A rim lock is a type of locking mechanism that is installed on the interior surface of a door. This style of lock is known for its distinctive surface-mount design, which means it sits on the outside of the door rather than being embedded within the door itself. Rim locks are usually found on older homes or buildings and are operated by a key or a knob, making them recognizable for their accessibility and ease of installation.

Mortise locks and cylindrical locks typically require more extensive installation processes since they are set into the door itself. Mortise locks are often found in commercial spaces or higher-security residential applications, while cylindrical locks are common in modern residential doors but are usually not mounted on the surface. Deadbolts, while also used on interior doors for added security, are more frequently associated with exterior doors to provide an additional layer of protection against forced entry.