As with other large size paper, six sheets are meant to be viewed 
        from a distance. As such, the artwork is usually coarser looking and lacks 
        the clarity and crispness of the smaller paper.
      In the US, 6 sheets were a very common size and utilizes until the 
        mid 1980s. See the US article on 6 
        Sheet
      In the UK, it's a different story; what we call a 6 sheet, they call 
        a 12 sheet. For more information on the British 
        6 Sheet, go to our British site.