MOSISO 20-22 inch Computer Blue Light Blocking Screen Protector for Diagonal 20,21.5,22 inch Monitor, Anti-Glare Double Sided Available Eye Protection Hanging Computer Screen Blue Light Blocker

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Dimension: 19.29 x 12.48 inch/L x W. This computer blue light blocking screen filter film is design for diagonally measured 20, 21.5, 22 inch 16:9 widescreen desktop PC LED monitor. Please measure the width and height of your computer screen before purchase. Protects your eyes by filtering and curbing 99% harmful UV. Anti-blue light between 420nm - 460nm can be reduced by 45% for HEV protection. Effectively reduce eye strain and fatigue caused by the UV and blue light. This upgraded anti-blue light screen protector is available on both sides, one matte side for glare protection and the other side is a smooth HD side. The matte film to effectively reduce glare and reflection, blocking external light interference. The high definition film will ensures maximum resolution. Made of Acrylic. It can effectively prevent screen from dust, fingerprint and scratches. Ultra thin to 0.01 inch of 95% clear transparency, which will not darken your laptop screen, keeping the original screen brightness. Suitable for office / home OL, gamer and programmer. Easy to install, just remove the surface film on each side and hang on the monitor screen. When you want to switch to the other side for use, simply unplug the 2 small black squares at the top and install on the other side.