The cover member has {HEAD ~ a top surface} terminating in {TAIL ~ longitudinal side wall portions} shaped to fit over the free edge regions of the channel member 
terminating in
The cover member has { HEAD ~ a top surface } terminating in { TAIL ~ longitudinal side wall portions } shaped to fit over the free edge regions of the channel member
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH