The support system is formed using less plastic and requires {TAIL ~ less stringent tolerances} than heretofore known while providing sufficient rigidity to the components of the window assembly to form {HEAD ~ a window assembly unit} that is relatively easy handle and, further, less costly to manufacture 
The support system is formed using less plastic and requires { TAIL ~ less stringent tolerances } than heretofore known while providing sufficient rigidity to the components of the window assembly to form { HEAD ~ a window assembly unit } that is relatively easy handle and , further , less costly to manufacture
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH