Toughened glass is used in a wide range of applications by the glazing industry from windows to roof glazing, interior design to curtain walling where it has established a proven performance. Toughened Glass is up to 5 times stronger than ordinary glass of the same thickness and meets safety standards for glass subjected to accidental human impact at the highest level. As a result architects and builders can specify glass for a wider range of uses in buildings. Toughened glass conforms to the highest level of safety ( class A ) and can be used in all critical locations. Toughened glass is manufactured to order, with a delivery of about 3 to 4 working days