Be able to see the children at all times with these indoor observation mirrors. Shatter resistant, wide angle mirrors eliminate blind spots and enhance visibility. Mirrors are lightweight and fade resistant. Convex mirrors and mirrored domes provide a view around corners, corridors, and classrooms. Mirrors each measure 18" across. Round Mirror includes a mounting Z bracket and hardware. Mounting hardware is not included with the Half Dome and Quarter Dome Mirrors. Mirrors are indoor use only.