OkiView Privacy Filter for Widescreen Desktop LCD Monitor 23.0" 16:9 (PF23.0W9) Keeps your personal or confidential information safe from prying eyes Designed to fit widescreen desktop LCD monitors with a diagonally measured 23" viewing screen and a 16:9 aspect ratio Actual filter dimensions are 20 1/16" wide x 11 5/16" high (510 mm x 287 mm) Includes your choice of two easy-to-use attachment methods Reversible, matte side reduces glare and reflections