Maximize safety at a glance. Safety mirrors in quarter, half or full dome reduce the chances of accidents due to blind corners in the plant or warehouse. Constructed of heavy-duty acrylic for durability. All mirrors have a black protective edge. Ideal Locations: 360° 4-way intersections, 180° T- intersections, 90° Corner intersections. USE FURNITURE POLISH TO CLEAN MIRRORS. GLASS CLEANER WILL DAMAGE SURFACE.