The PF14.1 Notebook Privacy Computer Filter is perfect for laptop computer users on business trips. It allows you to work with confidence on airplanes and in busy public venues. The PF14.1 fits notebook computers with a 14.1'' diagonal viewable screen. Notebook privacy filters keep confidential and private information private they utilize 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. The filter protects fragile LCD screens from scratches and fingerprints. The filter stays in place even when notebook computer is closed.