The ornamental design for a box, as shown and described.
FIG. 1 is a perspective view of a first embodiment of a box showing my new design;
FIG. 2 is a front elevation view of the first embodiment;
FIG. 3 is a rear elevation view of the first embodiment;
FIG. 4 is a top view of the first embodiment;
FIG. 5 is a bottom view of the first embodiment;
FIG. 6 is a left elevation view of the first embodiment;
FIG. 7 is a right elevation view of the first embodiment;
FIG. 8 is a perspective view of a second embodiment of a box showing my new design, differing from the first embodiment only in the inclusion of shading; and,
FIG. 9 is a front elevation view of the second embodiment, wherein the rear elevation view is a mirror image of the front elevation view.