1、Clear View: Computer eye protection filter film provides you with a clear view of the screen from an angle (about 30° to 60°) that appears dark when looking at the screen and bright when looking directly, simply adjust the brightness level of the monitor to change. 2、Anti Blue Light: Defend your eyes by filtering 96% of UV rays and suppressing 65% of blue light. This is a reversible filter that gives you the flexibility to choose a glossy or matte finish. 3、16:9 Aspect Ratio: Anti blue light filter with 16:9 aspect ratio is compatible with most brands, scratch resistant and used for data secret. 4、Both Sides Available: Desktop screen protector is available on both sides, with a frosted surfaces and anti dazzling coating design, and a clearer picture on the glossy side to meet your needs at all times. 5、Applicable Scenarios: Computer screen 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. Item Type: 23.6in Computer Screen Filter Product Material: PET Product Size: 21.5 Inch Aspect Ratio: 16:9 (Approx. 477 x 268mm / 18.8 x 10.6in) 1 x Computer Screen Filter 1 x Dust Free Cloth 1 x Plastic Tower Buckle 1 x Double Sided Tape 1 x User Manual