Now that we're ready to start doing the fabric panels for my theater, I need to get an idea of how much I have to account for the width of the fabric when measuring. I know I have seen it on here somewhere before, but I can't seem to find it. I have seen "a hair under 1/8 of an inch," but I'm am not sure if that's for a panel going up against a wall or column, or if it's going up against another panel? And is it 1/8" on the overall dimension, or from each side? Like if the space is 36" wide, is it 1/8" total (35 7/8") or 1/8" of each side (35 3/4")?