Protect your eyes and screen safe Advanced Privacy Technology - This multi-layer film privacy screen will blacken your screen when viewed from the side while keeping the screen clear when viewed straight on. It also protects your eyes from harmful glare, UV rays, and blue light. No more headaches. Compatibility This laptop privacy screen filter is designed for 18.5-inch laptops with an aspect ratio of 16:9. Size: 410mm*231mm, please confirm your laptop model before purchasing. This 18.5-inch laptop privacy screen not only provides privacy, but also provides additional protection for the screen from dents, scratches, and scratches. It is an ideal solution for open office environments, universities, financial institutions, healthcare providers, and corporate travel. Easy to stick and remove Our 18.5 privacy screen has two installation methods and only takes minutes to complete. Option 1 uses a transparent adhesive strip that can be firmly fixed to any screen. Option 2 (for computer screens with raised bezels only) uses a sliding mounting tab that easily attaches to the bezel of your laptop, allowing you to slide the filter on or off the screen as needed. No Impact on Clarity Laptop privacy screens do not affect brightness at all, it's just like having no privacy screen at all. You can adjust the screen brightness as needed.