Iprofayili yethu ye-Tempered U yeglasi / iimveliso zeglasi ye-U ihlangabezana neemfuno ezifanelekileyo malunga ne-§ 8, i-Fragmentation kunye ne-§ 9.4, amandla omatshini njengoko kuchazwe kumgangatho waseYurophu EN 15683-1 [1] xa ivavanywa ngokwe-EN 15683-1 [1] kunye ne-EN 1288-4 [2].
