said {HEAD ~ clamping member} holding said window unit frame in {TAIL ~ electrical conductive engagement} with said support member 
said { HEAD ~ clamping member } holding said window unit frame in { TAIL ~ electrical conductive engagement } with said support member
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH