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