The 3M PF11.6W9 Netbook Privacy Filter fits widescreen netbook computers with a diagonally measured 11.6" viewable screen. It is designed for LCD monitors that appear more rectangular than square and have a 16:9 aspect ratio. This netbook privacy filter utilizes 3M's Microlouver Privacy technology that allows only the person directly in front of the monitor to see the image on the screen. When attempting to view the screen from a side angle, passersby will see only a dark screen. The 3M widescreen privacy filter keeps your confidential on-screen information private, while also protecting the LCD screen from scratches. It can be reversed to glossy finish for great picture clarity or to matte finish for glare-free images.