Lincoln Electric clear protective replacement lens for welding helmets. Durable, breakage and abrasion resistant polycarbonate plastic lens is shatter resistant and protects the glass filter lens from weld spatter. Maintaining clear vision is integral to safety and weld quality. Exceeds high velocity and high impact requirements. Provides excellent protection against harmful welding rays. This lens is a great way to extend the life of your helmet. Conforms to ANSI Z87.1 requirements. Shade #11. Standard size replacement lens for helmets requiring a 5-1/4-inches length by 4-1/2-inches width lens.