Filter element with flow directing permeability layers

A filter element, comprising:

• a center tube;
• a media pack disposed around the center tube, the media pack comprising:
• a filtration sheet;
• and
• a corrugated support sheet coupled to the filtration sheet, the corrugated support sheet made from a different material than the filtration sheet, the corrugated support sheet and the filtration sheet forming a plurality of channels that are alternately sealed on opposing ends of the media pack, a permeability of the corrugated support sheet being less than a permeability of the filtration sheet for a fluid to be filtered so that a bulk of the fluid passes through the filtration sheet;
• and
• a first endcap coupled to a first axial end of the media pack.

A filter element, comprising:

• a center tube;
• a media pack disposed around the center tube, the media pack comprising:
• a filtration sheet;
• and
• a corrugated support sheet coupled to the filtration sheet, the corrugated support sheet and the filtration sheet forming a plurality of channels that are alternately sealed on opposing ends of the media pack, the media pack comprising a first filtration stage and a second filtration stage, the second filtration stage having a different permeability than the first filtration stage for a fluid to be filtered, at least one layer of the corrugated support sheet or the filtration sheet being shared between the first filtration stage and the second filtration stage;
• and
• an endcap coupled to an axial end of the media pack.