The ornamental design of a productdisplayrack, as shown.
FIG. 1 is a front isometric view of an embodiment of a product display rack including break lines to indicate portions of the product display rack that can be of indefinite length. The break lines do not form part of the claimed design. The concave portions of the face of the rack and the tines of the rack are repeated at regular intervals through the indefinite length portions;
FIG. 2 is a front elevation view of the product display rack of FIG. 1;
FIG. 3 is a top plan view of the product display rack of FIG. 1
FIG. 4 is a side elevation view of the right side (when viewed from the front) of the product display rack of FIG. 1;
FIG. 5 is a rear elevation view of the product display rack of FIG. 1; and,
FIG. 6 is a bottom plan view of the product display rack of FIG. 1.