Abstract: A device for enlarging a cargo area, having sides, of a truck having a tailgate. The device being adapted for mounting on the tailgate of the cargo area, and including a central panel with side edges and ends, one of the side edges being attachable to the tailgate. Attached to the central panel is a pair of end panels that can attach to the central panel and to the sides of the cargo area, so that the cargo area may be enlarged by positioning the tailgate in a substantially horizontal position, positioning the central panel in a substantially vertical orientation relative to the tailgate while the end panels attach to the sides of the cargo area and extend from the sides of the cargo area to the central panel. The structure also allows the end panels to fold under the central panel and between the central panel and the tailgate when not in use. Additionally, the structure allows the central panel to further unfold from the tailgate to form a work surface.