3M Privacy Filters fit both LCD and CRT desktop monitors. Allow users to work in high traffic areas with confidence that private on screen information will remain confidential. Only persons directly in front of the computer screen can see on-screen data. Blacks out screen from a side view so on lookers see only a dark blank screen. Helps protect fragile LCD screens from scratches and fingerprints thus avoiding costly repairs/replacements. Reduces screen glare up to 95%. Fits 16-19" CRTs and 17-18" LCD desktop monitors. Includes two sets of hanger arms for LCD or CRT monitors that will meet most users' needs. Blocks ELF/VLF E-field radiation and reduces static when properly grounded.