3M Privacy Filters keep confidential information private. Only persons directly in front of the monitor can see the image on screen; others on either side of them see a darkened screen. Designed to fit widescreen desktop LCD monitors with a diagonally measured 23 13/16" viewing screen and a 16:9 aspect ratio. Actual filter dimensions are 20 3/4" wide x 11 11/16" high (528 mm x 297 mm). Includes your choice of two easy-to-use attachment methods. Reversible, matte side reduces glare and reflections. Lightweight, thin, frameless design. Protects display from dirt, debris and scratches. Cleans easily with a soft cloth and water. Great for high traffic areas and open office environments.