Features: 1.Secret Protection: Computer screen filter effectively obscures secret when viewed from the side above 30 degrees, only for the left and right side, to change the secret angle from 60 to 30, simply adjust the monitor's brightness level. 2.UV Protection: Defend your eyes by filtering 96% of UV rays and suppressing 65% of blue lamp. This is a reversible secret screen filter that gives you the flexibility to choose a glossy or matte finish. 3.16:9 Aspect Ratio: Computer screen filter has a width of 554mm and a height of 311mm, with an aspect ratio of 16:9 compatible with most brands and made of PET. 4.Anti Dazzling Coating: 25in PC screen protector available on both sides, frosted surfaces anti dazzling coating design, clearer picture on glossy surfaces, always meet your needs. 5.Applicable Scenarios: Anti blue filter is ideal for maintaining screen secret in high traffic areas such as open work spaces, airports, airplanes, coffee shops, office environments, financial institutions and other public places. specification:Item Type: 25in Computer Screen Filter Product Material: PET Product Size: 25in Aspect Ratio: 16:9 (Approx. 554 x 311mm / 21.8 x 12.2in) PackageList:1 x ComputerScreenFilter 1 x Dust Free Cloth 1 x Plastic Tower Buckle 1 x Double Sided Tape 1 x User Manual