The 3M Black Privacy Filter for 22-inch Widescreen Monitor PF220W1B is a matte privacy filter designed to fit a 22-inch monitor. This filter, made in the United States by 3M, adds a black layer to prevent curious eyes from seeing the content displayed on the screen while maintaining a clear and vibrant view for the user. It is a one-unit quantity filter that is compatible with a universal range of monitor models.