Fan

FIG. 1 is a front, right perspective view of the fan showing my new design;

FIG. 2 is rear, left perspective view of thereof;

FIG. 3 is a front view of thereof;

FIG. 4 is a rear view of thereof;

FIG. 5 is a left view of thereof;

FIG. 6 is a right view of thereof;

FIG. 7 is a top view of thereof; and,

FIG. 8 is a bottom view of thereof.

The broken lines illustrate portions of the fan and form no part of the claimed design.