Function: 1. 23 inches: This computer screen protector ma 23 inches and 16:9. Check the width and height dimensions of your computer screen beforehand. 2. Viewing angle limitations: The content of the screen is not visible when viewed pod (the angle is about 30 degrees to 60 degrees). And the information is only visible to people directly in front of the monitor. 3. Eye protection: This wide screen protector blocks 96% of UV radiation and 65% of blue light, effectively protecting your eyes. One side has an anti-glare function, and the other side provides a clearer image. 4. 2 installation options: this desktop screen filter supports snap-on installation and double-sided tape sticking., 5. Wide Application: This computer screen filter is suitable for offices, cafes, airports, airplanes, trains and other public places. Specification: Item Type: Computer Screen Protector Material: PET Product Size: approx. 23 inches Aspect ratio: approx. (16:9) 509 x 286 mm / 20,0 x 11,3 inch (manual measurement, slight error may occur) List of packages: 1 x Computer Screen Protector 1 x Cloth 1 x Plastic Latch 1 x Double Sided Adhesive Tape 1 x User Manual Remove the product and use