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 allow 1-3mm error): 13 9/16" x 7 5/8" (344mm x 194mm), then this filter is good for you. It is very important to double-check your screen's width and height 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.] Dark from the Side (Left & Right)-- Note: Does not block the view directly behind you, regardless of distance. 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 privacy levels, simply adjust your screen's brightness accordingly. Matt Anti-Glare & Glossy Enhanced Privacy-- It is 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 to use in dark areas, the privacy effect will be weak. Two Installation Options-- Option 1 uses transparent double-sided adhesive strips that securely attach to any computer monitor. Option 2 (for monitors with a raised bezel only) uses slide-on hinges that attach to the edge of the monitor frame, allowing you to easily remove the privacy 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!