3M Pf21.6W Notebook Privacy Screen Filter Widescreen 21.6 InchDescriptionSpecificationsShipping 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. 6W fits widescreen size desktop LCD monitors with a diagonally measured 21. 6 inch viewable screen Actual filter dimensions are 11 7 16 Inch H x 18 1 4 Inch W This filter is designed for