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