The Privacy Filters PF13.3 are designed to fit older 4:3 standard aspect ratio notebooks with a viewable screen size of 13.3". Using 3M™ microlouver technology the filter gives full 60o privacy protection on either side, protecting sensitive information from unauthorised viewing. Easy to attach the filter can remain in place when the notebook is not in use providing additional screen protection. With a light matte finish the filter can help to reduce screen glare.