This standard BS EN 14321-2:2005 Glass in building. Thermally toughened alkaline earth silicate safety glass is classified in these ICS categories:
81.040.20 Glass in building
This European Standard covers the evaluation of conformity and the factory production control of flat thermally toughened alkaline earth silicate safety glass for use in buildings. NOTE 1 This also includes requirements subject to regulation. NOTE 2 For glass products with electrical wiring or connections for e.g. alarm or heating purposes, this European Standard covers only wiring subject for electrical potential difference to earth less than 50 V a.c. or less than 75 V d.c.
