Bulletproof windows and partitions in class FB4 with additional glazing in class ER2, are a new product addressing the requirements of projects placing special emphasis on securing buildings against attacks in the form of firearm discharge or detonation of an explosive charge. Bulletproof windows of class FB4 according to PN-EN 1522, with class ER2 glazing according to PN-EN 13541, are adapted to exceptional loads associated with a real threat of attack in the form of impact, discharge of small arms, or detonation of explosive materials generating a strong shockwave, with shock impulse within the range specific to class ER2. Glazing of bulletproof aluminum constructions with glass of class BR4 and ER2 substantially raises the resistance of the glazing to bullet penetration and shockwaves caused by detonation of an explosive charge. The application of multi-layered glazings provides resistance not only to detonation or firearm discharge, but also against burglary or manual attack, with the use of, e.g. an axe. FB4 windows and partitions with ER2 glazings are applied in buildings with an enhanced level of security.
Aluminum bulletproof windows and partitions are an optimal safeguard against not only firearm discharge but also against burglary or attack with the use of sharp tools. Their application in construction is constantly growing on account of security requirements, in the face of the real threat of assaults with the use of firearms and terrorist attacks. Aluminum bulletproof partitions and windows resist bullet discharge from various types of firearms, to which the appropriate classes are assigned as per standard PN-EN 1522 – from FB1 to FB7 for small arms and rifles, and class FSG for hunting firearms. Modern technology combined with ballistic tests makes it possible to manufacture bulletproof aluminum-glass constructions with excellent specifications in practically all classes. The design of aluminum bulletproof windows is based on well-thought-out solutions ensuring continuity of protection against penetration by bullets discharged from firearms at all critical points, such as the glazing, contact between glazing and frame, and profile joints. The construction is based on aluminum profiles with additional chambers for materials absorbing the kinetic energy of projectiles and protecting against penetration. An important element is the glazing, in the form of glass of class BR1-BR7, according to standard PN-EN 1063. A glazing of this type is made using strong PVB films joining panes of tempered glass – this composite is capable of stopping bullets by reducing their momentum on individual layers. Aluminum bulletproof windows and partitions are used in buildings at particular risk of attack using firearms, affording the users of these buildings security: protection against bullets and injury by glass fragments in the case of a construction in the fragment-free variant.