Welcome to the store! Laptop Screen Size Measurement Method - If the visible area of your screen has the following dimensions Width x Height (Exclude raised/flat bezel and error of 1-3 mm): 13 9/16\" x 7 5/8\" (344 mm x 194 mm), then this filter is right for you. It is very important to double-check the width and height of your screen excluding the raised or flat bezel before ordering. It is not recommended to make your choice solely based on the screen's diagonal size. [Not compatible with MacBooks Series Laptop.] Darks from the side (left & right) - Note: Does not block visibility directly behind you, regardless of distance The privacy filter makes the screen appear dark when viewed from an angle (left and right 30-180), but clear when viewed directly. Please note that when using this privacy filter, the screen will be slightly darker than before. To change the privacy levels, simply adjust your monitor's brightness accordingly. Matte Anti-Glare & Glossy Enhanced Privacy - It's a reversible privacy screen, giving you the flexibility to choose a glossy or matte finish. The matte side will have less glare, but the glossy side will have stronger privacy. Perfect for open workspaces - Privacy works better in bright areas, not recommended for use in dark areas, the privacy effect will be weak. Two installation options - Option 1 uses transparent double-sided adhesive strips that attach securely to any computer screen. Option 2 (for computer screens with a raised bezel only) uses slide mounts that attach to the edge of the screen frame, allowing you to easily remove the privacy screen filter when needed. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!