In {TAIL ~ this embodiment}, {HEAD ~ the bottom wall} 154 is longer than the top wall to facilitate attachment of the coil restraints to the trough as indicated above 
In
In { TAIL ~ this embodiment } , { HEAD ~ the bottom wall } 154 is longer than the top wall to facilitate attachment of the coil restraints to the trough as indicated above
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH