Bullet Resistant Laminated Glass UL-752 Level 4 from Protective Structures, Ltd. is a multi‐ply annealed glass laminated meeting Underwriters Laboratories (UL) Standard 752 for Ballistic protection, Level 4 (SPSA).
Bullet resistant laminated glass is combination of various layers of glass and PVB (Poly Vinylbutyral). Typically, a thin layer of glass is used on the interior (non threat side) surface to minimize spall. These various layers are bonded together and come as a single unit.
