Enhanced Privacy -- Our Computer privacy screen filter is perfect for public and high traffic areas. Please confirm the width and height measurements for your computer screen before ordering. We advise against making a selection based solely on a computer screens diagonal size. Dark Screen For Others -- Clear view for you. The computer privacy filter makes the screen appear dark when looking at it from an angle (the angle is about 30- 60), but bright when looking directly at it. To change the privacy angle from 60 to 30 degrees - simply adjust your monitors brightness level. Easy Installation -- Includes two, easy-to-attach options - Attachment strips and Slide-mount tabs. Package contains Extra installation kits.