Patent ID: 8491691

Claim:
An air filter cartridge comprising: (a) a media pack having upstream and downstream opposite flow faces and first and second opposite sides extending between the upstream and downstream opposite flow faces; (i) the media pack comprising a stack of strips of single facer filter media material, each strip including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces; (ii) the upstream flow face and downstream flow face being parallel, and each strip of the media pack being angled relative to a horizontal surface from the upstream flow face to the downstream flow face at an angle of 20-80 degrees; (b) a first side panel against the first side of the media pack; and (c) a gasket arrangement including: (i) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face; and (ii) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel.