The ornamental design for a tieredriserrack, as shown and described.
This patent contains at least one drawing/photograph executed in color. Copies of this patent with colored drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front, top perspective view of a tiered riser rack showing my new design.
FIG. 2 is a front, bottom perspective view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a rear elevational view thereof.
FIG. 5 is a top plan view thereof.
FIG. 6 is a bottom plan view thereof.
FIG. 7 is a left-side elevational view thereof; and,