Features: 1.Wide Matching: Suits for 13.3in laptop monitor screen, which is compatible with 13.3in laptop screens from brands such as for HP, for Dell, for Acer, for ASUS, for Samsung, for ViewSonic, etc. Please confirm the measurement of the width and height of your computer screen before ordering. 2.Better Viewing: Provide you with a clear view. The computer filter makes the screen appear dark when viewed from a certain angle approximately 30?60, but bright when viewed directly. To change the angle from 60 to 30 , simply adjust the brightness level of the monitor. 3.Eye Protection: Protecting your eyes by filtering 96% of ultraviolet light and suppressing 65% of blue light. This is a reversible screen filter that allows you to flexibly choose between glossy or matte surfaces, and choose matte surfaces to reduce external glaring. This filter is anti glaring and scratch resistant. 4.Good PET Material: The screen 13.3in display can be completed in approximately 30 seconds. The material of computer protective film is usually high strength PET polyester film, which can protecting the computer screen from damage even in the event of collisions, scratches, and other situations. 5.Wide Application: Perfect for maintaining screen safety in areas with high traffic such as open workspaces, airports, airplanes trains, coffee shops, office environments, financial institutions, and other public places. specification:Item Type: Computer Screen Protector Material: PET Product Size: Approx. 287.6 x 180mm / 11.32 x 7.09in, that is, 13in. PackageList:1 x Computer Screen Protector 1 x Dust Free Cloth 4 x Sticker 1 x Cleaning Cloth 1 x Paper Board