3M™ Privacy Filters provide world-class "black out" privacy from side views outside the 60-degree viewing angle, while creating an excellent viewing experience from straight on views. Designed for full screen monitors with flat glass displays, these Privacy Filters are reversible between a glossy side and a glare-reducing matte side that helps reduce reflections and hide fingerprints, so you can enjoy pristine image clarity. The COMPLY™ Magnetic Attach allows you to quick-click between world-class privacy and screen sharing thanks to ultra strong magnets that click the filter securely into place. Diagonal Monitor Size: 21.5"; Fits Device Type: Flat Panel Monitor; Frame Type: Frameless; Maximum Antiglare Protection Percent: 35%.