accordance with the invention turning now to fig4 the weatherstrip 10 is mounted atop the door frame 12 door frame 12 includes a mounting structure including horizontally extending mounting flange 14 which at its terminal end extends toward the window 40 of the motor vehicle 2 the horizontally extending mounting flange 14 is connected to the vertical mounting flange 16 vertical mounting flange 16 comprises vertical section members 18 20 which are welded brazed or suitably joined together a vertically extending rail member 22 may be provided along the length of the weatherstrip 10 or it can be provided intermittently along the length of the vertical mounting flange 16 as shown the rail member 22 comprises a surface upon which a portion of the weatherstrip will bear so as to aid in the snap fitting of the weatherstrip over the horizontal mounting flange 14 in the embodiment shown in fig4 it is noted that the mounting structure of the weatherstrip is all located below the door liner 30 this is important in helping to reduce noise in the door panel also since the mounting structure of the weatherstrip is provided underneath the door liner 30 there is no need to provide a special decorative show or ornamental surface on same the weatherstrip 10 comprises an outer flange 42 and inner flange 200 both the outer flange 42 and inner flange 200 depend from the intermediate portion 150 of the weatherstrip 10 and extend downwardly therefrom as shown the inner flange 200 is shorter than the outer flange 42 the inner flange 200 terminates in a hooked portion 202 which extends inwardly toward the underneath portion of the intermediate member 150 the hooked portion 202 is adapted to bear against the vertical mounting flange 16 outer flange 42 comprises a top.