I claim the ornamental design for a divider panel, as shown and described.
FIG. 1 is a top perspective view of a divider panel, showing my new design.
FIG. 2 is a front elevational view of the divider panel.
FIG. 3 is a rear elevational view of the divider panel.
FIG. 4 is a left side elevational view of the divider panel.
FIG. 5 is a right side elevational view of the divider panel.
FIG. 6 is a top plan view of the divider panel.
FIG. 7 is a bottom plan view of the divider panel; and,
FIG. 8 is a top perspective exploded view of the divider panel, shown with environmental structure of a container.
The divider panel is shown with a symbolic break in its length and height. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines showing of a container in FIG. 8 is for the purpose of illustrating environmental structure and forms no part of the claimed design.