Features: 1.COMPATIBLE: Computer screen filter is compatible with 19.5 inch monitors from for HP, for Dell, for Acer, for Asus, for ViewSonic and other brands. 2.SCREEN ANGLE LIMITATION: Laptop private screen filter makes the screen appear dark when viewed from a certain angle (about 30° to 60°) but bright when viewed directly, simply adjust the brightness levels of the monitor to change the private angle. 3.REDUCE DAZZING: The 16:9 widescreen screen protector is a reversible private screen filter that gives you the flexibility to choose between glossy or matte surfaces, with matte surfaces selected to reduce external dazzing. 4.EYE PROTECTION: Protects your eyes by filtering 96% of UV rays and suppressing 65% of blue light, can be installed in about 30 seconds, PET material, scratch resistant. 5.PUBLIC PLACES: Computer screen filter is perfect for keeping screens PRIVATE in high traffic areas such as open workspaces, airports, airplanes, coffee shops, office environments, financial institutions and other public places specification:Item Type: 19.5 Inch Laptop Screen Filter Material: PET Size: 19.5 inch (Approx. 433 x 249mm / 17.0 x 9.8in) PackageList:1 x 19.5InchLaptopScreenFilter 1 x DustFreeCloth 2 xAdhesive 12 x Double SidedAdhesive NotePlease confirm the measurement of the width and height of your computer screen before ordering.