Helps reduce glare and mirror-like reflections which makes your screen easier to use in high-glare situations Designed to fit widescreen desktop LCD monitors with a diagonally measured 23.8" 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) Easy to apply, removable and re-attachable. No lamination, no bubbles.