3M™ PF15.4W Widescreen Notebook Privacy Computer Filter Widescreen privacy protection for new widescreen notebook computers. - PF15.4W fits widescreen notebook computers with a 15.4" diagonally measured viewable screen - Actual filter dimensions are 8.18" high x 13.09" wide - This filter is designed for widescreen laptop computers with screens that appear more rectangular than square - Keeps information confidential even in high traffic areas such as airports, airplanes, internet cafes, and other public places - Notebook privacy filters keep confidential and private information safe from prying eyes - 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 - Reversible for either glossy or matte screen finish - Reduces reflections when used with the matte side facing you - Helps protect fragile LCD screens from scratches and damage - New easy on easy off attachment system - Filter stays in place even when laptop is closed - One year warranty from date of purchase