The ISO B series of paper sizes is slightly larger than the A series.
Over time it became necessary to classify larger sheets of paper that were coming in to use in printing.
You can see a listing of ISO A and B series in the size chart below.
The ISO B series of paper sizes is slightly larger than the A series.
Over time it became necessary to classify larger sheets of paper that were coming in to use in printing.
You can see a listing of ISO A and B series in the size chart below.