Stanley 160 Degree Door Viewer Oil Rubbed Bronze Used to allow a user to identify visitors from the security of a locked door Glass lens offers 160 degrees lens angle for wide viewing Zinc die cast body Requires a 9/16 inch hole and can be uses in doors that measure 1-3/8 to 2 inch thick Exterior trim width is 31/32 inch, Interior trim width is 11/16 inch