Stacking Insert

FIG. 1 is a top perspective view of a stacking insert;

FIG. 2 is a bottom perspective view of the stacking insert shown in FIG. 1 ;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevational view thereof; and,

FIG. 6 is a front elevational view of the short side thereof.

The ornamental design which is claimed is shown in solid lines in the drawings. A left-side elevational view is not shown because it is a mirror image to the right-side elevational view shown in FIG. 5 . A rear elevational view is not shown because it is a mirror image to the front elevational view shown in FIG. 6 .