3M™ Privacy Filter Screen for 21.5" Widescreen Monitors, 16:9 Aspect Ratio, Reduces Blue Light, Anti-Glare

3M Black Privacy Filters for monitors provide world-class "black out" privacy from side views outside the 60-degree viewing angle, while creating an excellent, high-resolution viewing experience. Reversible between a glossy side and a glare-reducing matte side that helps reduce reflections and hide fingerprints, so you can enjoy pristine image clarity. The advanced microlouver technology creates an excellent, high-resolution viewing experience.