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 25 916 viewing screen and a 1610 aspect ratio actual filter dimensions are 21 1116 wide x 13 916 high 551 mm x 344 mm includes your choice of two easy to use attachment methods reversible matte side reduces glare and reflectio