Allows traffic to see around blind corners and reduce collisions. Excellent for security to monitor aisles and high risk areas. All models come complete with mounting bracket, adjustable swivel and an ozone-safe extruded rubber rim for increased durability. The hardboard-backed series has a weatherproof painted back. For the harshest environments, the heavy-duty 20-gauge baked enamel spun steel back can withstand almost any environmental element. Roundtangular convex models are excellent for low ceilings but still offer the same 160º+ viewing angle.