Enhance your digital privacy with this StarTech.com monitor privacy screen, designed for 21.5-inch widescreen displays. It effectively protects your confidential information, intellectual property, and sensitive data by limiting the viewing angle to +/-30 degrees. This screen filter also reduces blue light emissions (390nm-480nm wavelength), which can help alleviate eye strain and improve sleep patterns. The privacy screen is reversible, offering a matte side for glare reduction and a glossy side for enhanced clarity. Easily attach it to your screen using the included attachment strips or slide-mount tabs. Backed by StarTech.com's 2-year warranty and free lifetime technical support, this TAA compliant accessory is a reliable choice for IT professionals and everyday users alike.