The 12" mirror is suitable for small areas and spot applications.
The 18" is suitable for small areas up to 15 feet.
The 26" is suitable for areas up to 20 feet.

• Convex mirrors are great for hidden corners, hallways, stairs and blind corners. They are suitable for a limitless variety of locations including schools, libraries, parking lots, cafeterias and common areas. 
• The enhanced visibility they provide can help to prevent collisions and provide added surveillance to almost any area. 
• Convex mirrors are easily installed with the bracket provided onto walls and positioned for maximum visibility.
• Installation mounting screws not provided.