Antireflective coating reduces glare by 95%, improves image and enhances contrast to help prevent eyestrain and thereby reduce fatigue. (Not designed to filter out high direct glare from a light source shining directly on the monitor, such as a direct window or overhead lighting). Fully assembled; simple hanging bracket mounting; elegant frameless design with silver trim. Natural light tint for true color fidelity. Protects LCD display surface. Fits both 19 and 20-Inch Widescreen LCD monitors. The actual filter measures 17.7" W x 11.8" H, and fits over the front of the entire monitor. (19" Widescreen monitors have a 19.0" viewable diagonal and the viewing area is 16 1/8" W x 10 1/16" H. 20" Widescreen monitors have a 20.1" viewable diagonal and the viewing area is 17 1/16" W x 10 11/16" H) Before Choosing your screen, use measuring instructions in image to left to ensure you choose appropriately. (Full measuring instructions and chart of all available filter sizes available in Technical Specifications below) About us: - Founded in 1982 as one of the first manufacturers of Anti-Glare Filters for personal computers, Kantek has always been an industry pioneer. Focusing on the needs of our customers, amid a rapidly changing marketplace, has led to our continued growth with an ever expanding and evolving product line.