1. Textiles that do not have a raised fiber surface but have an average time of flame spread in the test of 3.5
seconds or more.
2. Textiles having a raised fiber surface that have an average time of flame spread in the test of more than 7
seconds or that burn with a surface flash (in less than 7 seconds) in which the base fabric is not affected
by the flame.
3. Textiles for which no specimen ignites.