{HEAD ~ The reflector} is preferably for 7/8 inch diameter tubes and has {TAIL ~ a film thickness} of about 0.8 mils 
has
{ HEAD ~ The reflector } is preferably for 7/8 inch diameter tubes and has { TAIL ~ a film thickness } of about 0.8 mils
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH