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 27.0" viewing screen and a 16:9 aspect ratio Actual filter dimensions are 23 9/16" wide x 13 1/4" high (598 mm x 337 mm) Easy to apply, removable and re-attachable. No lamination, no bubbles.