Because of {HEAD ~ the extension} of the middle spacers 209 beyond the edges of the base sheets, the face coating strips take on {TAIL ~ a well defined molded shape} 
Because of { HEAD ~ the extension } of the middle spacers 209 beyond the edges of the base sheets , the face coating strips take on { TAIL ~ a well defined molded shape }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL