Originally Posted by Prism99

It means that quilting lines should be a maximum of 6" apart. A 6" square would not be fine because the diagonal measurement from corner to corner would be greater than 6". Likewise the 2" by 8" would not be good enough. The manufacturer calculates the max distance that will allow the batting to maintain integrity through multiple machine washings and normal wear and tear. Exceeding a recommendation does not necessarily mean there will be immediate problems; rather the issues will start showing up over time. The stresses on the batting may show up with the batting pulling away from the quilting lines, bunching up, etc.