Filter

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

FIG. 2 is a bottom and rear 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;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an enlarged portion view taken from encircled portion labeled, “ FIG. 9 ,” in FIG. 1 .

The dashed-dot lines form the boundary of the enlarged portion view of FIG. 9 in FIGS. 1 and 9 and form no part of the claimed design. The even dashed broken lines shown in the drawings are included for the purpose of illustrating portions of the filter that form no part of the claimed design.