Privacy filter for LCD monitors blacks out image to prevent unauthorized viewing. Design helps ensure the privacy of on-screen data on your 19" LCD monitor. Microlouver technology creates a narrow viewing angle so the image is only visible to those directly in front of the screen. Side view is black. Filter overlays LCD surface for a "built-in" look and protects your delicate LCD surface from damage. Filter also eliminates glare and increases contrast. Privacy filter is easily removed.