The ornamental design for a postersupportprofilebar, as shown and described.
FIG. 1 is a front view of a poster support profile bar in accordance with the present invention comprising two identical end bar parts engaged with an intermediate bar part;
FIG. 2 is a perspective view of the poster support profile bar according to FIG. 1;
FIG. 3 is an enlarged front view of one of the end bar parts according to FIG. 1, with the other end bar part being a mirror image hereof, removed for clarity of illustration;
FIG. 4 is a perspective view of the end bar part according to FIG. 3;
FIG. 5 is an enlarged front view of the intermediate bar part according to FIG. 1, removed for clarity of illustration; and,
FIG. 6 is a perspective view of the intermediate bar part according to FIG. 5.