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:

Shelflike passive solar devices usually set near the ceiling projecting from either the interior or exterior of windows to allow daylight or direct sunlight to bounce deep into buildings without glare or strong modulation, to enhance interior lighting conditions.