The barrier member can have a construction that is flexible in {HEAD ~ both directions} along the length and {TAIL ~ width} of the barrier member 
along
The barrier member can have a construction that is flexible in { HEAD ~ both directions } along the length and { TAIL ~ width } of the barrier member
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH