- PF19.0 fits standard size desktop monitors with a diagonally measured 19" viewing screen. - Actual filter dimensions are 11.89" high x 14.83" wide. - This filter is designed for non-widescreen desktop monitors with screens that appear more square than rectangular and have a 4 x 3 aspect ratio. - Helps keep confidential and private information safe. - Utilizes 3M's microlouver privacy technology so only persons directly in front of the monitor can see the image on screen. - Passersby see only a dark screen. - Excellent for high traffic areas. - Reversible for either glossy or matte screen finish. - Reduces reflections when used with the matte side facing you. - Helps to protect your LCD panel from scratches and abrasions. - Easy on easy off attachment system.