The ornamental design for a portableoverhang for a recreation vehicle, as shown and described.
FIG. 1 is a perspective view of a portable overhang for a recreational vehicle.
FIG. 2 is a left elevational view of a portable overhang for a recreational vehicle.
FIG. 3 is a right elevational view of a portable overhang for a recreational vehicle.
FIG. 4 is a rear elevational view of a portable overhang for a recreational vehicle.
FIG. 5 is a front elevational view of a portable overhang for a recreational vehicle.
FIG. 6 is a top plan view of a portable overhang for a recreational vehicle; and,
FIG. 7 is a bottom view of a portable overhang for a recreational vehicle.
In the drawings, the broken lines depict a recreational vehicle and form no part of the claimed design. The material illustrated is intended to represent any form of material including solid, transparent, translucent, and screen materials.