Price Mistake? Frameless Blackout Privacy Filter For 21.5" Widescreen Monitor, 16:9 Aspect Ratio Gadget [1exPM7F0]

3M™ Black Privacy Filters utilize ingenious microlouver technology to deliver world-class effective privacy for laptops and monitors. Side views are "blacked out" from prying eyes while your screen remains clearly visible to straight-on views. 3M™ Black Privacy Filters fade to black starting at the 30-degree side angle, are reversible between a glossy side and glare-reducing matte and reduce 35% of blue light transmission.