ENHANCED PRIVACY – Protect your privacy with an WELINC privacy screen filter. WELINC Privacy Protector makes on-screen data visible only to individuals sitting in front of the monitor. WELINC privacy screen filter makes the screen appear dark when looking at it from an angle (the angle is 30° Each - Both 60°), but bright when looking directly at it. WELINC monitor screen protector features multiple layers of thick film with revolutionary ro-louver technology. PERFECT FIT WITH 19.5 INCHES DIAGONALLY MEASURED - WIDESCREEN monitor - Aspect Ratio 16:9 - Filter Size: Width: 17 inches, Height: 9 5/16 inches (433mm x 237mm). Contact us if you have any questions about dimensions. BLUE LIGHT & ANTI-GLARE EYE PROTECTION - Not only will your WELINC filter protect your login and other data from prying eyes, it reduces harmful blue light. And its high hardness rating also provides a layer of physical protection to your screen. EASY INSTALLATION – includes two, easy-to-attach options - Attachment strips and Slide-mount tabs. Package contains Extra installation kits (option 1 and 2). We guarantee all screen filters have 100% quality due to hand checking. 100% MONEY BACK GUARANTEE - WELINC is the leading computer screen privacy film producer, so we're happy to provide a no-questions-asked money back guarantee on your purchase. We're proud to make the best. Choose WELINC with complete buyer confidence!