Sold as 1 EA. Panoramic 180 viewing area for collision protection at intersections, as well as surveillance. Plexiglas. Blind corners and intersections in busy work atmospheres can be a dangerous hazard. Scan unguarded aisles, eliminate blind intersections, monitor production areas and safeguard entrances and exists. The mirror is made from a light weight acrylic with a super bright image that won't fade over time. An ideal device for hospitals, clinics, rest homes, industrial warehouses and retail facilities. 12