National Hardware N830-289 UL Fire Rated Door Viewer 160 Degree 1\/2 Inch Hole Oil Rubbed Bronze

UL Fire Rated Door Viewer. Used to allow a user to identify visitors from the security of a locked door. UL Listed glass lens. Offers 160 degrees lens angle for wide viewing. Oil rubbed bronze on zinc die cast body. Requires a 1/2 inch hole and can be used in doors that measure 1-3/8 to 2 inch thick. Exterior trim width is 31/32 inch. Interior trim width is 9/16 inch. Poly-bagged.