Bfl-s1 (floor class)

Also: Bfl-s1, Bfl s1, Cfl-s1, Dfl-s1

EN 13501-1 classification for floor coverings. The 'fl' suffix denotes 'floor'. Bfl-s1 is the highest practical class for combustible flooring with the lowest smoke production - used for fire-rated stages, raised floors and balconies.