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The ornamental design for a decorative air filter housing, as shown and described. |
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FIG. 1 is perspective view of a decorative air filter housing in accortance with the present invention;
FIG. 2 is a top plan view of the embodiment of FIG. 1;
FIG. 3 is a bottom plan view of the embodiment of FIG. 1;
FIG. 4 is a front elevation view of the embodiment of FIG. 1;
FIG. 5 is a rear elevation view of the embodiment of FIG. 1; and,
FIG. 6 is a side elevation view of FIG. 1, the opposite side being a mirror image of that shown.
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