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. [surface elements and surface element components]

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Components
4. components
5. components by specific context
6. architectural elements
7. openings and opening components
8. openings
9. openings by form
10. windows and window components
11. window components

Anotations

Scope note:

General term for architectural features that reduce heat gain or light, through designs that block the direct entrance of sun rays into buildings; may be either fixed or movable devices.