The ornamental design for a detachablerearwindow for open deck vehicle, as shown and described.
FIG. 1 is a perspective view, as seen from a location to the left and rear, of a detachable rear window for open deck vehicle, showing my new design;
FIG. 2 is a perspective view thereof, as seen from a location to the left and front;
FIG. 3 is rear elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is top plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is another perspective view thereof as seen from a location to the left and rear.
The right side elevational view is a mirror image of the left side. The broken line illustration of an open deck vehicle in FIG. 7 constitutes environmental structure which is not part of the claimed design.