Bulletproof doors
Gerlock Max security door model meets FB 4 class, in accordance with EN1522/1523 standard, and can be upgraded to higher - FB5; FB6; FB7 bullet proof levels using special certified ballistic steel or other certified ballistic materials. Ballistic glass also can be installed in to the door according to the security level of the door.

THE EURO STANDARD EN 1522/1523
Table 1: classification and requirements for tests with handguns and rifles