US D397903 S
FIG. 1 is a perspective view of a double column storage tower of the present invention;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof; the left side elevational view being a mirror image thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The dotted line showings in the drawings of stored cases are for environmental purposes only and form no part of the claimed design.