I use foam board that I purchase at Dollar Tree for $1.00 each. Each one is 20X30 inches and I cut each one into 10X6 inch boards so I get 10 to a sheet which is .10 cents each. Can't beat that! I don't usually have sections of fabric over 3 yards each but have a few and have never had a problem wrapping what I need around them. They are acid free so there is no threat of harming the fabric. As you can see below they work beautifully for me. (This is only have of the closet.)
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