[Upgraded Privacy Shield]: The computer privacy screen filter is perfect for office, public and high traffic areas. It limits viewing angle to +/- 30 degrees, data is visible only to persons directly in front of the monitor, while prying eyes beside you see only NOTHING. [Black Screen for Others]: Over 15%~23% clarity than other brands monitor. When viewing from 30- 60, the computer privacy filter makes the screen appear dark and see nothing. [Fits Screen Sizes of 22/23/24]: Compatible for 22/23/24 " Widescreen Monitor. Please check the screen size before purchasing this privacy screen filter. If unsure the screen size, please do not hesitate to leave us a question in the Q&A section below to confirm. [Anti-Blue Light & Anti-Glare Eye Protection]: Anti-reflective surface for enhanced viewing comfort, protects your eyes by filtering out 96% UV and reducing blue light by 70%.