Features: 1.No damage to eyes, scientific anti?peeping, frontal view is clear while side view for black screen. 2.Widely used for computer display with a screen size of 21.5 inches and a screen ratio of 16:9. 3.Micro?optical blinds technology, available on both sides, matte side with anti?glare coating designed, glossy side provide clearer picture, meet your different needs. 4.Anti?reflective, anti?radiation, anti?oil and no twill, high?definition eye protection, reliable to use. 5.Simple installation, does not require complicated operations, very convenient for using. specification:Condition: 100% Brand New Item Type: Computer Anti-Peeping Film Material: PET Color: As picture shown Application Method: Snap Type: Front Film Process: Coating Size: Approx. 477 x 268mm/18.8 x 10.6in Application: Suitable for computer display with a screen size of 21.5 inches and a screen ratio of 16:9. PackageList:1 x Anti-Peeping Film1 x Clean Cloth1 x Tape1 x Hanging Sheet NoteIf the size of the computer screen is less than 21.5 inches, smaller than the size of this product, you need to cut it to fit the size.