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