PROTECT SENSITIVE DATA: This monitor security filter provides privacy outside +/-30° viewing angle from the center of your 16:9 21.5" widescreen display, keeping your desktop screen data confidential EASY APPLICATION: Attach privacy filter directly to the monitor using residue-free adhesive strips, or slide the filter over your display with included side mounting tabs - Extra adhesive strips and mounting tabs (MON-PRIVACY-SCREEN-K) sold separately BLUE LIGHT REDUCTION: In addition to protecting your data, this PC monitor privacy screen minimizes digital eye strain when working for extended periods of time by reducing blue light by 40% to 51% DURABLE & VERSATILE: Flexible dual mounting options fit various monitor bezels to add a durable protective film to the monitor that protects against scratches, fingerprints, & dust REDUCE GLARE OR INCREASE CLARITY: Reversible computer monitor privacy filter retains sharp and consistent image quality in any lighting with an anti-glare matte-finish or a high-clarity glossy-finish