It provides data suitable for comparing the end-use performances of essentially flat materials, composites or assemblies, which are used primarily as the exposed surfaces of walls or ceilings.
Ọ na-enye data adabara atụnyere end-eji egwú nke nnoo ewepụghị ihe, composites ma ọ bụ mgbakọ, nke na-eji isi dị ka ndị gụrụ na-ebupụta nke mgbidi na uko ụlọ.