3M Pf21.5W Privacy Filter 21.5 Inch 16:9 Widescreen FramelessDescriptionSpecificationsShipping 3M privacy filters keep confidential information private. Data is visible only to persons directly in front of the monitor, passersby see only a dark screen. Improves screen contrast and reduces screen glare and reflections PF21. 5W fits widescreen size desktop LCD monitors with a diagonally measured 21. 5 Inch viewable screen Actual filter dimensions are 10 9 16 Inch H x 18 3 4 Inch This filter is designed for