Half-Dome Convex Security MirrorBlind 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. Detection mirrors are curved to eliminate distortion. Simply use this half-dome, Plexiglas® convex safety and security mirror with 180° view angle to help prevent unnecessary and costly accidents. 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. Diameter: 18".