Lips 38 define {HEAD ~ an insertion opening} 42 therebetween through which {TAIL ~ electrical receptacle} 16 may be inserted into C shaped channel 18 
Lips 38 define { HEAD ~ an insertion opening } 42 therebetween through which { TAIL ~ electrical receptacle } 16 may be inserted into C shaped channel 18
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH