Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. architectural elements
7. [architectural elements by building type]
8. public building fixtures

Anotations

Scope note:

Rented compartments in officially designated post offices in which all mail is placed and held until called for by the renter. For outdoor public and private boxes for pickup and delivery of mail, use "mailboxes."