Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. building materials
7. insulation
8. [insulation by form]

Anotations

Scope note:

A flexible insulating material composed of loosely felted fiberglass fibers, used for thermal or acoustical insulation and available in precut, standard lengths, usually one inch thick and 17-36 inches wide. A long, continuous roll of batt insulation is also called blanket "insulation."