- EX10XXL fits 19"-21" CRTs and 19"-20" LCD monitors - Black flat frame design - Reduces glare up to 90% - Includes both CRT and LCD hanger arms to meet most users' needs - Protects fragile LCD screens from fingerprints and damage - Viewing area diagonal is 20.62 inches (523 mm) - Meets American Optometric Association (AOA) standards for VDT glare reduction - Cleans easily with a soft, lint-free cloth and glass cleaner - Lifetime warranty