3m Vision Filter LCD/Laptop 21.6" Widescreen Decreases Viewing Angle Clipmount PF21.6W 3M PF21.6W fits widescreen LCD desktop monitors. 3M Privacy Filters keep confidential and private information private. Utilizes 3M's micro louver privacy technology so only persons directly in front of the monitor can see the image on screen, passersby see only a dark screen. Excellent for high traffic areas. Protects your LCD panel from scratches and abrasions. Two unique attachment systems.