the linking lip 4 f prevent abnormal noise caused by floating of the sealing lip 4 e for example as shown in fig4 by attaching the window molding 4 from the upper segment u to the side segment s through the corner segment c the end section is inserted normally from the bottom end of the side segment s into the fender and the opening end is left as it is as shown in fig1 so that air streaming through the interior of the fender during cruising of the vehicle enters the hollow section 6 and is compressed to prevent the sealing lip 4 e to float therefore it is possible to reduce the thickness of the sealing lip 4 e thereby enabling flush surfacing and improving the external appearance also fig3 a shows a cross sectional view of the window molding through a plane s u2014 s in fig4 having a weir water receiving section in the side segment s the upper segment u of the window molding 4 has a horizontal cross sectional shape shown in fig1 that changes gradually near the corner segment c and in the side segment s to the shape changes to that shown in fig3 a the basic shape of the window molding 4 in the side segment s is the same as that shown in fig1 but the weir 18 is added to the protruding rib 4 b by extrusion molding the window molding 4 described above is.