an outer sealing member extending from {TAIL ~ ends} of the towers and which covers {HEAD ~ the two openings}, and 
an outer sealing member extending from { TAIL ~ ends } of the towers and which covers { HEAD ~ the two openings } , and
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH