The ornamental design for a palletcoversystem, as shown and described.
FIG. 1 is a front perspective view for a pallet cover system showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left elevation view thereof;
FIG. 5 is a right elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a bottom plan view thereof in a flat configuration; and,
FIG. 9 is a top plan view thereof in a flat configuration.
The broken lines in the figures show portions of the pallet cover system, which form no part of the claimed design. The pallet cover system is shown with a symbolic break in its height. The appearance of any portion of the article between the break lines forms no part of the claimed design.