UNE-EN 60684-3-248
Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 248: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame retarded, shrink ratios 2:1, 3:1, 4:1 (IEC 60684-3-248:2007). (Endorsed by AENOR in September of 2007.)