– PF12.5W9 fits widescreen notebooks with a 12.5″ viewing area diagonal and a 16:9 aspect ratio – Actual filter dimensions are 10.91″ wide x 6.15″ high – This filter is designed for widescreen notebook computers with screens that appear more rectangular than square and have a 16:9 aspect ratio – 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; helps keep confidential and private information private – Provides more consistent quality and uniform appearance, thus reducing visual distractions – Users experience clearer, crisper images on-screen than with competitive filters – Easy-on, easy-off attachment system.