Exterior shell of a truck cab body

Description

FIG. 1 is a side elevation view of an exterior shell of a truck cab body showing our new design, it being understood that the opposite side is a mirror image thereof and that the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is an enlarged front elevation view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is an enlarged rear elevation view, it being understood that the lower front edge and front interior surface thereof have been omitted for clarity of illustration.