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.
Waxay bixisaa xog ku haboon barbar qaab dhamaadka-isticmaalka qalabka muhiimad flat, darka ama kiniisadaha, taasoo asal ahaan lagu isticmaalo sida meelaha qaawan ee darbiyada iyo saqafka.