The ornamental design for a pick-up truck bed enclosure, as shown and described.
FIG. 1 is a top, right side perspective view of a pick-up truck bed
enclosure showing my new design, mounted on the bed of a pick-up truck
shown in broken lines for illustrative purposes only;
FIG. 2 is a top, right, rear perspective view thereof;
FIG. 3 is an enlarged front elevational view thereof;
FIG. 4 is an enlarged right side elevational view thereof, the left side
being a mirror image of the right side shown herein; and
FIG. 5 is an enlarged rear elevational view thereof.