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. [openings and opening components]
8. openings (architectural elements)
9. [openings by form]
10. [windows and window components]
11. window components

Anotations

Scope note:

Refers to ornamental devices of any kind, especially grilles or lattices, fitted into window openings. In the United States the term more specifically refers to screens of mesh designed to be put across window openings to admit air while excluding insects.