The ornamental design for a doorpanelextrusion, as shown and described.
FIG. 1 is a top perspective view of the door panel extrusion which is broken in the center indicating indeterminate length, and
FIG. 2 is a bottom perspective view of the door panel extrusion shown in FIG. 1.
FIG. 3 is a top perspective view of an alternative configuration of the door panel extrusion which is broken in the center indicating indeterminate length; and,
FIG. 4 is a bottom perspective view of the door panel extrusion shown in FIG. 3.