Feature:1. PERFECT FIT: 19.5 inch computer widescreen display protector with 16:9 aspect ratio, 433mm/17.05in width and 240mm/9.45in height compatible with most 19.5 inch laptop brands. Premium PET material, high definition, high hardness, stable performance.2. ANTI BLUE LIGHT: Filtering imported optical material reduces 92 percent of blue light and 98 percent of UV rays, filtering all the harmful light emitted from the screen to guard your eyes. Highly transparent and reinforced built in protective layer not only presents high definition picture quality, but also guards your screen from scratches.3. ANTI DAZZLE: Anti dazzle technology reduces dazzle by more than 90 degrees and softens the light so you won't feel harsh reflections in bright light environments. Unique double sided structure, the glossy surface has a better anti peeking effect, and the frosted surface has a better anti dazzle effect.4. ENHANCE SAFETY: Makes data on the screen visible only to the individual sitting in front of the display. The anti snoop screen filter makes the screen appear dark when viewed from an angle (30 degree at each angle to all 60 degree), but bright when viewed straight on.5. MULTI PURPOSE: This is a reversible screen filter that gives you the flexibility of choosing either a glossy or matte finish, choose matte to minimize external dazzle. The filter is anti dazzle and scratch resistance!Specification:Item Type: 19.5 Inch Laptop Screen FilterMaterial: PETSize: Approx. 433x240mm / 17.05x9.45in Aspect Ratio: 16:9.Package List:1 x 19.5 Inch Laptop Screen Filter1 x Adhesive strip6 x Sticker1 x Wiping Cloth 1 x Instruction Manual Note:Manual measurement please allow some error.