The outwardly extending perimeter flange comprises an end surface, an inboard surface, and {HEAD ~ a beveled surface} located between the end surface and {TAIL ~ the inboard surface} 
The outwardly extending perimeter flange comprises an end surface , an inboard surface , and { HEAD ~ a beveled surface } located between the end surface and { TAIL ~ the inboard surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL