Shelf Unit

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

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

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

FIG. 6 is a right-side elevational view thereof.

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.