Shelf unit

[0001]FIG. 1 is a top perspective view of a shelf unit;

[0002]FIG. 2 is a bottom perspective view thereof;

[0003]FIG. 3 is a top plan view thereof;

[0004]FIG. 4 is a bottom plan view thereof;

[0005]FIG. 5 is a front elevational view thereof; and,

[0006]FIG. 6 is a right-side elevational view thereof.

[0007]A rear elevational view is not shown because it is identical to the front elevational view shown in FIG. 5. A left-side elevational view is not shown because it is identical to the right-side elevational view shown in FIG. 6. The broken line showing the end caps is for the purpose of illustrating environmental structure and forms no part of the claimed design.