A:
This binder uses 3 posts and they are the same width apart as all other letter-size, 3-hole punch binders.
Just know that when you are removing data out of it, you may want to use 2 large "Binder Clips" (i.e Staples Item no. 831610) and place them on the 2 corners of the pages that are closest to the spine.
That way you can be sure that none of the pages will fall out of order and that the holes will always be lined up when placed back on the 3 posts of the binder.
Answered on 12/25/2010 by The Bulky Item Filer from NH