Kantek Blackout Privacy Filter, Widescreen, 27", Black (KTKSVL27W) EachPrivacy filter helps ensure the privacy of on screen data on your 27" wide screen notebooks and LCD monitors. Microlouver technology creates a narrow viewing angle. Image is only visible to those directly in front of the screen. Side view is black. Privacy filter also reduces glare, increases contrast and protects your delicate LCD surface from damage. Overlay LCD surface with the filter for a built in look. Aspect ratio is 16: 9. General Information