End caps are formed with tapered tangs which tightly fit into {HEAD ~ the central groove} of {TAIL ~ the channel} thereby securely fitting the end caps to the opposite ends of the channel 
of
End caps are formed with tapered tangs which tightly fit into { HEAD ~ the central groove } of { TAIL ~ the channel } thereby securely fitting the end caps to the opposite ends of the channel
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH