Fan

FIG. 1 is a front right side perspective view for a fan, showing our new design;

FIG. 2 is a rear bottom left side perspective view of FIG. 1 thereof;

FIG. 3 is a front elevational view of FIG. 1 thereof;

FIG. 4 is a rear elevational view of FIG. 1 thereof;

FIG. 5 is a left side elevational view of FIG. 1 thereof;

FIG. 6 is a right side elevational view of FIG. 1 thereof;

FIG. 7 is a top plan view of FIG. 1 thereof; and,

FIG. 8 is a bottom plan view of FIG. 1 thereof.

The broken lines depict portions of the fan that form no part of the claimed design.