Air filter

Description

FIG. 1 is a front, top perspective view of an air filter, showing our new design;

FIG. 2 is a rear, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the figures illustrate portions of the air filter that form no part of the claimed design.

Claims

The ornamental design for an air filter, as shown and described.