Privacy screen uses a microlouver technology that darkens the screen view from the sides / 30 degrees from center Designed to fit laptops with 13.5 displays and 32 aspect ratio Does not interfere when closing the lid FlipOver mounting feature enables quickly flipover the privacy filter to share contents without uninstalling the filter This laptop privacy screen blocks up to 51% of blue light Use the included adhesive strips or flipover tabs to install the screen protector. Specifications. Size 13.5. Weight 0.47 lbs