1. COMPATIBILITY: This computer screen protector film is compatible with 23-inch monitors from brands like HP, Dell, Acer, Asus, and ViewSonic. Please confirm the width and height dimensions of your computer screen before ordering. 2. PROVIDES CLEAR VIEW: The computer screen filter provides you with a clear view of the screen, making it appear dark when viewed from an angle (angle of approximately 30–60 degrees) but bright when viewed directly. To change the angle from 60 degrees to 30 degrees, simply adjust the screen brightness. 3. EYE PROTECTION: Protect your eyes by filtering 96% of UV rays and reducing 65% of blue light. This is a reversible screen filter that gives you the flexibility to choose either a glossy or matte surface, where the matte surface is selected to minimize external glare. 4. INSTALLATION: The 23-inch screen protector can be installed in about 30 seconds. Two mounting options for your screen protector: 1. Attaches securely to any screen with transparent adhesive strips. 2. Removable mounting method, snap-on attachment, you can attach or remove as needed. 5. APPLICABLE SCENE: The 23-inch computer screen protector is perfect for maintaining screen privacy in high-traffic areas such as open workspaces, airports, airplanes, trains, cafes, office environments, financial institutions, and other public places. We are well aware of how important customer service is to our customers, therefore we strive to provide the most thoughtful and prompt service. From ordering to delivery and handling customer service issues, we follow the entire process to ensure that your rights and interests are protected in the best possible way.