"These privacy filters can be used on both Computer Monitors and Laptops! Guardian Privacy Filters help keep companies compliant with privacy laws. The main complaint with privacy filters is that they make your screen darker even when viewed straight on by the user. Our filters let more light through than the competition while still greying out the screen when viewed from the side to keep the on-screen data unreadable. This is not a black-out screen, it is a privacy filter that protects your data while remaining user friendly. Yes, your boss will still be able to see that you are playing games! There are two attachment methods. It comes with tape strips if you want to stick it directly onto your screen, and it comes with tabs that stick to your bezel so the filter can slide down behind the tabs and be easily removed and replaced when needed. Privacy Filter with 60 degree viewing angle. These are ONLY for monitors with 16:10 aspect ratio, so please MEASURE your viewable area to make sure it fits. Actual filter dimensions are 11 11/16"" high x 18 11/16"" wide (297 mm x 474 mm). Reversible for either glossy or matte (anti-glare) finish. Reduces reflections when used with the matte side facing you. Helps protect fragile monitors from scratches and fingerprints. Easy on easy off attachment system. One-year warranty from date of purchase."