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. sound device components
7. keyboard instrument components
8. [swells and swell components]
9. swell components

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Components
4. components
5. components by specific context
6. sound device components
7. aerophone components
8. organ components

Anotations

Scope note:

Longitudinal shutters or slats built into one side of the swell box of an organ or reed organ, usually with beveled edges and linked together in sets either vertically or horizontally, and pivoted so that the organ player can open or close them as desired by means of the swell action.