Case of 36 polycarbonate face shield windows that fit any Jackson Safety Headgear; Compatible with the Jackson Safety Hard Hat Interchange System; No special tools needed. Good performance against high heat applications, flying debris, and ideal for heavy industrial manufacturing, high impact working areas, Excellent cold flexibility. Clear window made of polycarbonate material that provides 99.9% UVA/UVB/UVC protection to help prevent eye damage; D3 rating for splash protection. Meets ANSI Z87.1 for high impact protection and is CSA Z94.3 compliant when used with any Jackson Safety head gear, protective eyewear should be worn under face shields at all times. Each window measures 15.5″ width by 8″ height by 0.040″ thick. For nearly a century, professional workers in all walks of life have demanded Jackson Safety for their welding and personal protective equipment needs. The reason is simple. When it comes to providing innovative safety solutions, unparalleled features, long-lasting value, and comfort, Jackson Safety has set the standard.