The composite films may be used with single pane windows or with dual or triple pane windows, or any other window assemblies, and will improve {HEAD ~ the U Factor} of {TAIL ~ the window} 
of
The composite films may be used with single pane windows or with dual or triple pane windows , or any other window assemblies , and will improve { HEAD ~ the U Factor } of { TAIL ~ the window }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL