Fan

FIG. 1 is a perspective view of a fan, showing our 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;

FIG. 9 is a reference view representing that the fan is assembled to a frame; and,

FIG. 10 is another reference view representing that the fan is assembled to the frame.

The broken lines throughout the views form no part of the claimed design.