Adjustable Shelf Unit

FIG. 1 is a top-right perspective view of the adjustable shelf unit of the present invention; FIG. 2 is a front elevation view of the adjustable shelf unit shown in FIG. 1 ; FIG. 3 is a rear elevation view of the adjustable shelf unit shown in FIG. 1 ; FIG. 4 is a left side elevation view of the adjustable shelf unit shown in FIG. 1 ; FIG. 5 is a right side elevation view of the adjustable shelf unit shown in FIG. 1 ; FIG. 6 is a top plan view of the adjustable shelf unit shown in FIG. 1 ; and, FIG. 7 is a bottom plan view of the adjustable shelf unit shown in FIG. 1 . The drawings illustrate an adjustable shelf unit, as shown in the drawings. Contour lines are included in the various views of FIGS. 1 through 7 to depict surface curvature, flatness and/or other shapes. Illustrative portions that are depicted in broken lines form no part of the claimed design.