The ornamental design for a rangehood, as shown and described.
FIG. 1 is a perspective view of a range hood showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is another perspective view thereof shown in a position of use.
The broken lines represent portions of the range hood and form no part of the claimed design. The dot dash broken lines in FIG. 9 represent the environment of the range hood and form no part of the claimed design.