In {TAIL ~ this embodiment}, {HEAD ~ the bottom wall} 154 is also wider than the top wall 152 to facilitate attachment of the coil restraints to the trough 
In
In { TAIL ~ this embodiment } , { HEAD ~ the bottom wall } 154 is also wider than the top wall 152 to facilitate attachment of the coil restraints to the trough
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