The missing word completes the statement: Mortise locks are ______ the frame of a door.

The missing word completes the statement: Mortise locks are ______ the frame of a door.

• A. Recessed into
• B. Mounted on
• C. Attached to the door
• D. Hidden behind trim

Answer: (A)

Mortise locks are designed to be embedded in the door itself by cutting a pocket (a mortise) into the edge of the door to house the lock body. This makes the locking mechanism sit recessed rather than sticking out on the surface, with the strike plate located in the door frame to receive the bolt. That recessed, inside-the-door installation is what the statement is aiming to describe. Surface-mounted options would project from the door or frame, or sit behind trim, which is not how mortise locks are installed.

Mortise locks are designed to be embedded in the door itself by cutting a pocket (a mortise) into the edge of the door to house the lock body. This makes the locking mechanism sit recessed rather than sticking out on the surface, with the strike plate located in the door frame to receive the bolt. That recessed, inside-the-door installation is what the statement is aiming to describe. Surface-mounted options would project from the door or frame, or sit behind trim, which is not how mortise locks are installed.