Air treatment system

FIG. 1 is a perspective view of the air treatment system embodying the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being identical thereto;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

FIGS. 1, 2, and 5 show portions of the front side in broken lines. The portions shown in broken lines are shown for environmental purposes and do not form any part of the claimed design.