Helps ensure the privacy of on-screen data on your notebook or LCD monitor. Microlouver technology creates a narrow viewing angle. Image is only visible to those directly in front of the screen; side view is black. It also reduces glare, increases contrast & protects the delicate monitor surface from damage. Overlays monitor surface for a built-in look. Includes microfiber cleaning cloth. Diagonal Monitor Size: 20.1"; Fits Device Type: Flat Panel Monitor; Maximum Antiglare Protection Percent: 90%; Mounting: Adhesive Strips; Adhesive Tabs.