Feature: 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. Specification: 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). Package List: 1 x Computer Screen Filter1 x Dust Free Cloth1 x Plastic Tower Buckle1 x Double Sided Tape1 x User Manual