Monolithic fire resistant glass is a monolithic specially tempered glass which meets the criteria for fire resistance classes of preserving the integrity of E60 to E90 (of double glazed units). Due to exposure to high temperature such glass does not become turbid and does not expand, it maintains its integrity during the time specified in the formula (in minutes). Product details As the sizes is not fixed as customer special demand.we have a wide sizes range for your choice. Minimum sizes:300x300mm Maximum sizes:2550x3600mm thickness:6-19mm