PFMR13 is a custom cut privacy filter for the Apple MacBook Pro with Retina Display. It is not intended for use with other computer models. 3M? Privacy Filters allow you to work privately in public places. 3M? privacy technology darkens on-screen data when viewed from the side and provides higher clarity than competitive filters. The filter application system features an optically clear adhesive designed specifically for display screens. Testing proves that when kept clean filter can be repositioned hundreds of times.