Fits screen sizes of 29 3/4 diagonally measured (Width 25 3/16,Height 15 3/4) Screen data is visible only to persons directly in front of the monitor. 3M privacy technology Provides 1.5 times more effective privacy than competitive models. Helps protect your fragile LCD screen from damage Filter is reversible. Choose matte side for anti-glare or glossy side for increased clarity.