After attachment the clamping means is removed allowing {HEAD ~ the middle member} to expand and exert {TAIL ~ a force} on the wire mesh members 
to expand
After attachment the clamping means is removed allowing { HEAD ~ the middle member } to expand and exert { TAIL ~ a force } on the wire mesh members
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH