3M display privacy filter - 21.5"

3M Black Privacy Filters for monitors provide world-class "black out" privacy from side views, while creating an excellent, high-resolution viewing experience. Designed for full screen monitors with flat glass displays and 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.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. Designed for full screen monitors with flat glass displays and 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.