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 27 916 viewing screen and a 1610 aspect ratio actual filter dimensions are 23 38 wide x 14 58 high 594 mm x 371 mm includes your choice of two easy to use attachment methods reversible matte side reduces glare and reflections