Hanging Computer Privacy Screen Panel,Compatible with iMac 21.5 inch And 20", 20.2", 21.5", 21.6", 22" Desktop PC Computer Monitor- Anti-UV Eye Protection-16:9/16:10 Aspect Ratio(W 19.8" X H 12.6") Protect confidential or sensitive information on your monitor from wandering eyes with a Geckocare Privacy Screen. The thin privacy screen limits the field of vision to +/- 30 degrees and attaches to a flat-panel display via a spring-loaded mount that's extremely easy to install without tools or adhesives. The hard-coated and textured surface protects the screen from scratches or fingerprints while also reducing glare and improving viewing contrast. It also filters out harmful blue light up to 70 percent.