I also use the foam insulation board but I didn't cover mine because I also use them to spray baste my quilts. I left one sheet 4' x 8 ' and added 1/2 of another sheet to make it 6 ft wide by 8 ft wide. I also have one that both pieces are cut down to 6' high so it is 6 ft by 6 ft. They aren't very attractive not covered but they almost always have something hanging on them. I just stand them up against the wall and can move them anywhere I want them. Oh another thing, because my boards are free standing, I have 4 sides to work with which gives me a lot of space for design.