Air vent

FIG. 1 is an illustration of a perspective view of an air vent on a closet;

FIG. 2 is an illustration of a perspective view of the air vent;

FIG. 3 is an illustration of a top view of the air vent;

FIG. 4 is an illustration of a side view of the air vent;

FIG. 5 is an illustration of a front view of the air vent;

FIG. 6 is an illustration of a rear view of the air vent;

FIG. 7 is an illustration of a bottom view of the air vent; and,

FIG. 8 is an illustration of a partial sectional perspective view of three air vents on a closet.

The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design.