Kantek Blackout Privacy Screen for LCD Monitors, 21.5in (16:9), Black

Privacy filter is designed to protect delicate, 21-1/2in wide-screen LCD monitors from damage and to secure confidential information. Microlouver technology creates a restricted viewing angle. Image is only visible to those directly in front of the screen. Privacy filter eliminates glare and increases contrast. Protective, overlay LCD surface is designed for a built-in look. Filter stays in place when your notebook is closed. Aspect ratio is 16:9.