3M PF17.3W9 Privacy Screen Filter - 43.9 cm (17.3inch ) LCD. 3M Privacy Filters block out the view from either side of your screen without blurring or distortion, enabling you to safely continue viewing confidential data and personal files in public all everyone else will see is a black screen (or, with our new gold filters, their own golden reflection!). Our filters range from removable protective films for mobile phones and PDAs, to a flexible, hard-wearing film that fits easily over the screens of PCs, laptops and netbooks.