Welcome to the store! 1. 20 inch Size: Width: 441 mm, Height: 248 mm, diagonal: 20 inches, 16:9 aspect ratio, anti-glare, anti-reflective, UV and blue light reduction, protects the screen from scratches. 2. Application: Ideal for maintaining screen privacy in areas such as open workspaces, airports, airplanes, trains, cafes, office environments, financial institutions and other public places. 3. Privacy Angle: The computer screen filter makes the screen appear dark when viewed from a certain angle (angle of approximately 30°-60°), but bright when viewed directly. To change the angle from 60° to 30°, simply adjust the screen brightness. Effectively obscures secrets when viewed from the side at 30° or more. This feature is only available on the left and right sides. 4. Anti-Blue Light, Eye Protection: Protects your eyes by filtering 96% of UV rays and reducing 65% of blue light. This is a reversible privacy screen filter, available on both sides, giving you the flexibility to choose a glossy or matte side and choose a matte side to reduce external glare. 5. Two Installation Methods: 1. Use the transparent adhesive strip to securely attach to any monitor. 2. Removable snap fastener so you can install or remove as you like. Can be installed in about 30 seconds. Item Type: 20-inch Computer Screen Filter Product Material: PET Product Size: 20 inches Aspect Ratio: Approximately 16:9 (441 x 248 mm / 17.4 x 9.8 inches) 1 x Protective Film 1 x Dust-Free Cloth 1 x Plastic Tower Buckle 1 x Double-Sided Adhesive 1 x User Manual Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!