Filter Unit

FIG. 1 is a front perspective view of a filter unit;

FIG. 2 is a front view of the filter unit of FIG. 1 ;

FIG. 3 is a rear view of the filter unit of FIG. 1 ;

FIG. 4 is a first side view of the filter unit of FIG. 1 ;

FIG. 5 is a second side view of the filter unit of FIG. 1 ;

FIG. 6 is a top view of the filter unit of FIG. 1 ; and,

FIG. 7 is bottom view of the filter unit of FIG. 1 .

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