The aluminum coating is next to {HEAD ~ the support} and protected from the ambient atmosphere by {TAIL ~ the clear Mylar film} 
The aluminum coating is next to { HEAD ~ the support } and protected from the ambient atmosphere by { TAIL ~ the clear Mylar film }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL