What are Fed boxes,and CWI ? The only boxes I have seen so far are flat with holes in them,and are not stamped Brinks etc. They all have yellow machine rolled wrappers.
There really aren't any 'fed" boxes. The flat ones are the CWI boxes. Wrapper doesn't matter. I get the ones with the yellow wrappers also, but sometimes they switch to a brown wrapper. Depends who they order the paper from.