{HEAD ~ first and second end caps} formed with tangs providing an interference fit with the walls of said central groove of {TAIL ~ said channel} to secure said first and second end caps to said first and said second ends of said channel, respectively 
{ HEAD ~ first and second end caps } formed with tangs providing an interference fit with the walls of said central groove of { TAIL ~ said channel } to secure said first and second end caps to said first and said second ends of said channel , respectively
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH