Patent ID: 7303604

Claim:
An air cleaner comprising: (a) a housing; (b) a removable and replaceable filter element oriented in said housing; said filter element including: (i) a media construction having: first and second ends; a first flow face at the first end; and a second flow face at the second end; (A) the media within said media construction forming a plurality of flutes; each of the flutes extending between a first end positioned adjacent to the first flow face and a second end positioned adjacent to the second flow face; (B) a first set of selected ones of the flutes being open at the first end and closed at the second end; and (C) a second set of selected ones of said flutes being closed at the first end and open at the second end; (ii) a seal member oriented with respect to said media construction to form a releasable, peripherally directed seal between the filter element and an internal annular sealing surface of the housing; (iii) a frame construction mounted on said media construction; (A) said frame construction having a portion extending across one of said first flow face and second flow face; (B) said frame construction supporting said seal member; and (c) a precleaner arrangement oriented upstream of said filter element.