See All RR1218 Round Rectangular Glass Indoor Convex Security Mirror, 18" Length x 12" Width (Pack of 1) Rectangular convex mirror with two rounded sides reflects a wide angle image at a diminished size to help extend a field of view Helps a person see around obstacles for safety, or monitor a wide area for efficient surveillance Glass is scratch resistant, withstands frequent cleaning, and reflects a clear, bright image Comes with a swivel mounting bracket that makes the mirror adjustable to a wide range of angles Tempered hardboard backing for good strength-to-weight ratio in indoor applications