Made using quality 3M™ materials, SKILCRAFT® Full Screen Privacy Filters prevent visual hacking by darkening on-screen data when viewed from any angle. These 16:9 aspect ratio borderless privacy filters are easy to attach and remove from flat borderless computer monitors and reduce 35% of blue light transmission. Essentially the same as 3M™ Black Privacy Filters. Diagonal Monitor Size: 23.8"; Fits Device Type: Flat Panel Monitor; Frame Type: Frameless; Mounting Details: Overlays the LCD Display Surface.