I am just starting to put my fabric on boards, because I have seen so many who use it, and comment on how easy it is to access the fabric and I like how organized it is, whether by color or amount, etc. I am not wrapping anything over 2 yards or under 1/2 yard, preferring to do ruler fold on them and keeping on another shelf. I have the 6 1/2 x 10 1/2 boards. And this is a dumb question, but I would like to know, just which side is the acid free side? The shiny or dull. When I get my sewing room back in order, BIG REMODEL, I will post pictures of my boarded fabric. I will definitely keep an eye on this thread.