FIG. 1 is a front, raised perspective view of a shelf according to a first embodiment of the invention;
FIG. 2 is a front view of the shelf of FIG. 1;
FIG. 3 is a rear view of the shelf of FIG. 1;
FIG. 4 is a right side view of the shelf of FIG. 1;
FIG. 5 is a left side view of the shelf of FIG. 1;
FIG. 6 is a top view of the shelf of FIG. 1;
FIG. 7 is a bottom view of the shelf of FIG. 1;
FIG. 8 is a front, raised perspective view of a shelf according to a second embodiment of the invention;
FIG. 9 is a front view of the shelf of FIG. 8;
FIG. 10 is a rear view of the shelf of FIG. 8;
FIG. 11 is a right side view of the shelf of FIG. 8;
FIG. 12 is a left side view of the shelf of FIG. 8;
FIG. 13 is a top view of the shelf of FIG. 8;
FIG. 14 is a bottom view of the shelf of FIG. 8;
FIG. 15 is a front, raised perspective view of a shelf according to a third embodiment of the invention;
FIG. 16 is a front view of the shelf of FIG. 15;
FIG. 17 is a rear view of the shelf of FIG. 15;
FIG. 18 is a right side view of the shelf of FIG. 15;
FIG. 19 is a left side view of the shelf of FIG. 15;
FIG. 20 is a top view of the shelf of FIG. 15; and,
FIG. 21 is a bottom view of the shelf of FIG. 15.
The broken lines shown on the surface of the drawings show portions of the shelf that form no part of the claimed design.