Further, the present invention relates to {TAIL ~ a system} that integrates light fixtures with a suspended grid ceiling or {HEAD ~ a solid ceiling} 
Further , the present invention relates to { TAIL ~ a system } that integrates light fixtures with a suspended grid ceiling or { HEAD ~ a solid ceiling }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD