The PF17.0W Laptop Privacy Filter from 3M™ keeps your on-screen data private using its Microlouver technology and is designed for 17.0" LCD laptops. The on-screen data is visible only to persons directly in front of the monitor; passersby only see a blank, dark screen. This filter protects fragile LCD screens from scratches and fingerprints. Easy to attach and remove PF17.0W Laptop Privacy Filter can be left in place even when your laptop computer is closed. The laptop shown in the image is sold separately.