SCHOTT manufactures the fire-resistant glass used in German fire doorsets and screens — PYRAN borosilicate in the E and EW classes and PYRANOVA laminated intumescent glass in the EI classes — covering EI 15 to EI 120, EW 30 to EW 60 and T 30 to T 90. The company states that all its fire-protection special glasses are CE-marked and certified to EN 13501-2, and publishes the corresponding DIBt allgemeine bauaufsichtliche Zulassungen, including Z-19.14-2274 for PYRANOVA glazing, through its own approvals downloads.