The ornamental design for a modular truckrack, as shown and described.
FIG. 1 is a front perspective view of the modular truck rack of the present invention;
FIG. 2 is a front view of the modular truck rack shown in FIG. 1;
FIG. 3 is a rear view of the modular truck rack shown in FIG. 1;
FIG. 4 is a bottom view of the modular truck rack shown in FIG. 1;
FIG. 5 is a top view of the modular truck rack shown in FIG. 1;
FIG. 6 is a view of one side of the modular truck rack shown in FIG. 1;
FIG. 7 is a view of the opposite side of the modular truck rack shown in FIG. 6; and,
FIG. 8 is a rear perspective view of the modular truck rack shown in FIG. 1.
The ornamental design which is claimed is shown in the solid lines in the drawings. The broken lines shown in the drawings are for the purpose of illustrating environmental structure and form no part of the claimed design.