3M™ Frameless Blackout Privacy Filter For 21.3" Monitor

3M™ Frameless Blackout Privacy Filter For 21.3" Monitor3M 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. Diagonal Monitor Size: 21. 3";