FIG. 1 is a front and right side perspective view of a window fan showing our new design;

FIG. 2 is an enlarged right side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a rear elevation view thereof.

The left side and bottom view are mirror images of the right side and top view with the exception of the control switch.