PRIVACY FLT FOR 17IN LCD DT BLK Extremely lightweight, 3M Privacy Filters will not affect monitor height or position. Patented removable attachment method requires no hanger arms and can be removed and replaced many times without affecting the attachment system strength. 3M Privacy Filters use nearly invisible microlouver technology so louver lines don't interfere with your crisp, clear view of on-screen data. Onlookers see a darkened screen when viewed from the side.