See All PV26-90 Panaramic Full Dome Plexiglas Security Mirror, 90 Degree Viewing Angle, 26" Diameter (Pack of 1) Quarter dome mirror helps a person see around obstacles for safety, or monitor a wide area for efficient surveillance Mounts in a corner and reflects a 90 degree angle image for an overhead view of a perpendicular passageway Acrylic is shatter resistant, weighs less than glass, and reflects a clear, bright image Comes with wall-mounting hardware for convenient installation