1COMPATIBLE MODELS: PC private screen filter perfectly fits 27in PCs with 16: 9 aspect ratio, 597mm width, 336mm height. Compatible with for HP, for Dell, for Acer, for Asus, for ViewSonic and other brands with precise sizes to ensure a perfect fit. 2ANTI GLARING: Unique double sided construction for reversible use. Glossy surface has better anti peeping effect and frosted surface has better anti glaring effect. Premium anti glaring technology that reduces glaring by more than 90 degrees. 3ANTI BLUE LIGHT: The computer screen private filter protector is made of imported optical material, which can reduce 92% of blue light and 98% of UV rays, filtering all the harmful rays emitted by the screen and protecting your eyes. 4ENHANCED SECURITY: With this computer screen protector, only the person sitting in front of the screen will be able to see the data on the screen, and the screen will look dark when viewed from certain angles (30 for each angle, 60 for both angles). 5SCREEN AND EYE GUARD: This computer screen protective film has a highly transparent reinforced built in protective layer with high definition image quality, guards your screen from scratches and also guards your eyes.