The 3M Anti-Glare Filter from 3M is an ideal filter for glossy monitor screens. It diffuses light on screens where indoor lighting conditions produce glare or distracting light. It is lightweight, thin, and frameless, and also gives added protection to any screen against harmful dust and scratches. The filter is attached using attachment strips and slide mount tabs. Made for widescreens that measure 23" diagonally (including touchscreens), the viewing area ratio is 16:9.