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. Designed for protection against high heat applications, flying debris, and ideal for heavy industrial manufacturing and high impact working areas. 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 20" width by 10" 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.Established in 1933, Jackson Safety has built a century long reputation for delivering the most innovative safety solutions in the welding and personal protective equipment industries. When it comes to providing safety solutions with long-lasting value, durability and comfort, Jackson Safety has set the standard. Whether the need is for welding protection in a steel fabrication environment, head protection on a construction site, or hearing protection at an airport, Jackson Safety provides the widest range of safety choices to meet the needs of every job and every worker.