Air Filter

FIG. 1 is a perspective view of an air filter showing my new design;

FIG. 2 is a perspective view of the air filter in another angle;

FIG. 3 is a bottom perspective view of the air filter;

FIG. 4 is a front view of the air filter;

FIG. 5 is rear view of the air filter;

FIG. 6 is a left view of the air filter;

FIG. 7 is a right view of the air filter;

FIG. 8 is a top plan view of the air filter; and,

FIG. 9 is a bottom plan view of the air filter.

The broken lines shown in the figures are for the purpose of illustrating portions of the air filter and form no part of the claimed design.