Cassette Storage Unit

FIG. 1 is a top perspective view of a cassette storage unit showing our new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines show portions of the cassette storage unit that form no part of the claimed design.