Shelf

FIG. 1 is a front view of a shelf unit showing my new design.

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left-top front perspective view thereof; and,

FIG. 7 ; is a right-top front perspective view thereof.

Broken line disclosure is for illustrative purposes only and forms no part of the claimed design.

Screws are shown in FIGS. 1 , 2 , 3 , 4 , 5 , 7 and 8 for illustrative purposes only and form no part of the claimed design.