The PF17.0 Privacy Computer Monitor Filter from 3M™ keeps your on-screen data private using its Microlouver technology and is designed for 17" laptop and LCD monitor. The on-screen data is visible only to persons directly in front of the monitor; passersby only see a blank, dark screen. The filter offers privacy without blurring or distorting screen images. This filter reduces glare and helps produce bright graphics and sharp text. Its unobtrusive design does not interfere with LCD speakers or monitor controls and guards your screen against scratches and abrasions. In addition, its unique design enables you to leave the filter in place even when your laptop computer is closed. The monitor shown in the image is sold separately.