Instant Snap-on Magnetic Attachment: Simply place the privacy screen along the top of your MacBook and let the magnets attach along the top. No need for tricky placement, messy tape, or damaging adhesive. Easily remove and reattach when you need it. Please note, when the privacy screen is attached, your laptop will not close completely, but the sleep mode is still supported. LEAVE VISUAL HACKERS IN THE DARK: Don't expose personal or business data to prying eyes. These filters darken your LCD screen if seen from the sides, while allowing clear vision for you. Keep your computers secure with these industry best protectors. WE'VE GOT YOUR SCREEN COVERED: Our 19 inch (19" diagonally) desktop filter is 1 of 26 covering 1,000's of displays with the highest quality polymer film available. We cover both standard and widescreen monitors & the full range of aspect ratios. EASY INSTALLATION: It's a snap to apply your Akamai privacy cover. We use the highest quality 3M adhesives to ensure long lasting protection. We've included full installation instructions so you'll have no problem applying the filter to your screens. BLUE LIGHT & ANTI-GLARE EYE PROTECTION: Not only will your filter protect your login and other data from prying eyes, it reduces harmful blue light by 60%. And its 3H hardness rating also provides a layer of physical protection to your screen.