HP Privacy Filters help you protect your onscreen data by concealing your notebook screen from viewing by passersby and people seated nearby. The filter diminishes the readability for anyone not seated directly in front of the notebook while maintaining the onscreen resolution for the individual user. - Protects your onscreen content from prying eyes. - Snaps easily into the screen bezel of your notebook. - Doesn’t add bulk or weight to your notebook. - Available in a range of screen sizes, from 12.1 (30.73 cm) to 17.3 (43.94 cm) diagonal inches.