One louver 62 has {TAIL ~ a solar tracking system} mounted to it constructed according to {HEAD ~ the principles} of the present invention 
One louver 62 has { TAIL ~ a solar tracking system } mounted to it constructed according to { HEAD ~ the principles } of the present invention
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH