Adjustable, convex glass security mirror has a 160 degree view angle Heavy-duty mounting brackets included Help prevent theft and increase work place safety with this security mirror. Scan unguarded aisles, eliminate blind intersections, monitor production areas and safeguard entrances and exists. Detection mirrors are curved to eliminate distortion. This adjustable, convex glass security mirror has a 160 degree view angle, making it ideal for scanning any business or office. For easy installation, all mirrors come with heavy-duty mounting brackets. Circular. Diameter: 12-in; For Area: 10 sq ft; Shape: Circular; Material(s): Glass. These mirrors are also used on roads, driveways, and alleys to provide safety for motorists where there is a lack of visibility, especially at curves and turns. They are also often found in the hallways of various buildings including hospitals, hotels, schools, stores, and apartment buildings. They are usually mounted on a wall or ceiling where hallways intersect each other, or where they make sharp turns. They are useful for people accessing the roadways and hallways, especially at locations having blind spots or where visibility may be limited.