FIG. 1 is a perspective view of an air filter showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side elevational thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a front elevational view thereof;
FIG. 7 is a rear elevational view thereof; and,
FIG. 8 is a cross-sectional view thereof taken along the length of the filter and shown at a larger scale.
The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.