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