{HEAD ~ a third pass} thru divider having at least one hole at the bottom, spaced away from {TAIL ~ the second pass} thru divider and in the interior of the main box; and 
{ HEAD ~ a third pass } thru divider having at least one hole at the bottom , spaced away from { TAIL ~ the second pass } thru divider and in the interior of the main box ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH