Storage shelving unit

[0001]FIG. 1 is a top perspective view of the storage shelving unit showing a first embodiment of our new and ornamental design;

[0002]FIG. 2 is a front elevation view thereof;

[0003]FIG. 3 is a back elevation view thereof;

[0004]FIG. 4 is a side elevation view thereof;

[0005]FIG. 5 is an alternate side elevation view thereof;

[0006]FIG. 6 is a top plan view thereof;

[0007]FIG. 7 is a top perspective view of the storage shelving unit showing a second embodiment of our new and ornamental design;

[0008]FIG. 8 is a front elevation view thereof;

[0009]FIG. 9 is a back elevation view thereof;

[0010]FIG. 10 is a side elevation view thereof;

[0011]FIG. 11 is an alternate side elevation view thereof; and,

[0012]FIG. 12 is a top plan view thereof.

[0013]The portions of the storage shelving unit shown in broken lines in the figures attached hereto form no part of the claimed design.