The ornamental design for the transparent mesh sign for windows, as shown and described.
FIG. 1 is a perspective view of the transparent mesh sign for windows
showing my new design, where the sign is shown in position and secured to
the window of an automobile. The broken line showing of the automobile is
for illustrative purposes only and forms no part of the claimed design;
FIG. 2 is an enlarged front elevational view of the transparent mesh sign
for windows;
FIG. 3 is a side elevational view of FIG. 2, the opposite being a mirror
image; and,