FIG. 1 is an isometric view of the right and front sides of a stackable modular storage tower assembly of selectable height showing our new design;

FIG. 2 is an isometric view of the top left and front sides thereof;

FIGS. 3 and 4 are respective right side and left side elevation views thereof; and,

FIG. 5 is a rear elevation thereof.

The undisclosed bottom view is unornamented except for the inclusion of the rectangular element shown in the views.