Fellowes PrivaScreen Privacy Filter for 18.1 Inch Monitors 5:4 (4800401) Blacks out screen image when viewed from the side to prevent prying eyes from reading your screen, while keeping a crystal clear screen image from straight-on view Protects screen from scratches and fingerprints and is easy to attach and remove Reversible; matte side helps reduce glare and filter is compatible with touchscreen laptops and monitors Privacy filter fits monitors with a diagonal screen measurement of 18.1" (viewable area only) and a 5:4 aspect ratio; Actual filter dimensions are 14-1/8" W x 11-3/8" H TAA Compliant This items packaging will indicate what is inside and cannot be hidden.