- PF18.5W fits widescreen notebook computers with a diagonally measured 18.5" viewing screen; - Actual filter dimensions are 9.090" high x 16.154" wide; - 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 making this filter excellent for high traffic areas; - Provides 1.5 times more effective privacy than competitive filters; - Users experience clearer, crisper images on-screen than with competitive filters; - Provides more consistent quality and uniform appearance, thus reducing visual distractions; - Reversible for either glossy or matte screen finish; reduces glare when used with the matte side facing you; - Helps to protect your LCD panel from scratches and abrasions; - Easy on easy off attachment system.