MAKROLON HYGARD bullet resistant glazing from Sheffield Plastics Inc. offers bullet resistant containment up to UL 752 Level 3. It also offers greater optical clarity and more abrasion resistance than other polycarbonate sheets. MAKROLON HYGARD manufactures three products: BR750, BR1000 and BR1250. The BR750 is a three-ply MAKROLON polycarbonate sheet with an acrylic interlayer suited for security applications requiring UL Listed Level 1 bullet resisting glazing. The BR1000 is a four-ply MAKROLON polycarbonate sheet achieving UL Listed Level 2 bullet resisting glazing. The BR1250 is also a four-ply MAKROLON polycarbonate sheet, but its superior strength is suited for high-level security applications requiring UL Listed Level 3 bullet resisting glazing.