Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by physical form]
7. [fiber and fiber by product]
8. [fiber by product]
9. fiberboard
10. fiber building board

Anotations

Scope note:

Fiberboard that is typically made of wood dust or fibers, or other cellulose left over from the processing of other products; distinguished from medium-density fiberboard and high-density fiberboard by density of fiber and strength.