For which of the following may a mortise lock never be used?

For which of the following may a mortise lock never be used?

• A. Residential doors
• B. Office doors
• C. Storage closets
• D. Secure containers

Answer: (D)

Mortise locks are built to be embedded into the edge of a door, with the lock body recessed inside the door and a strike plate in the door frame. This setup gives strong, flush security and is designed for doors in homes and offices where there’s a solid door edge and reliable frame to latch against. Because of that, they’re commonly used on residential doors and many office doors, and they can be fitted on storage closet doors that are designed to accept this hardware. Secure containers, on the other hand, don’t have a door edge or frame structure suitable for a mortise lock. They rely on locking methods designed for sturdy containers or safes, such as cam locks, padlocks with hasps, or built-in safe locks, which work with the container’s walls rather than a door edge and frame. Installing a mortise lock on a container would be impractical and unnecessary in most cases, making secure containers the scenario where mortise locks aren’t used.

Mortise locks are built to be embedded into the edge of a door, with the lock body recessed inside the door and a strike plate in the door frame. This setup gives strong, flush security and is designed for doors in homes and offices where there’s a solid door edge and reliable frame to latch against. Because of that, they’re commonly used on residential doors and many office doors, and they can be fitted on storage closet doors that are designed to accept this hardware.

Secure containers, on the other hand, don’t have a door edge or frame structure suitable for a mortise lock. They rely on locking methods designed for sturdy containers or safes, such as cam locks, padlocks with hasps, or built-in safe locks, which work with the container’s walls rather than a door edge and frame. Installing a mortise lock on a container would be impractical and unnecessary in most cases, making secure containers the scenario where mortise locks aren’t used.