Utilizes Microlouver Privacy Technology, so only persons directly in front of the monitor can see the image on screen. Helps keep confidential and private information safe. Blocks visibility from side angles outside the 60 degree viewing angle, but not behind you. Designed to fit widescreen desktop LCD monitors with a diagonally measured 15.6″ viewing screen and a 16:9 aspect ratio. Actual filter dimensions are : 344mm*194mm Includes two easy-to-attach, options – Adhesive tabs or Double-sided adhesive The user can choose either side of the face to install, smooth and matte side. Helps to protect your LCD panel from scratches and abrasions