Gilaasi profaili U tempered U / awọn ọja gilasi ikanni U pade awọn ibeere to wulo nipa § 8, Fragmentation ati § 9.4, Agbara ẹrọ bi a ti sọ ni boṣewa European EN 15683-1 [1] nigba idanwo ni ibamu si EN 15683-1 [1] ati EN 1288-4 [2].
