Patent ID: 8545585

Claim:
A filter element comprising: (a) a media pack comprising opposite first and second flow faces with flutes extending in a direction therebetween; a sidewall extending between the first and second flow faces; (i) the first flow face being an outlet flow face, and second flow faces being an inlet flow face; and (b) a gasket secured to the sidewall; the gasket having a sealing portion and an attachment portion; the sealing portion having a flat surface at least one inch long and being between planar with and 0.5 inches recessed from the first flow face, inclusive; (i) the gasket defining an undercut between the attachment portion and the sealing portion; (ii) the sealing portion including first and second angled surfaces slanting toward each other to meet at an apex; (A) the first angled surface extending from the attachment portion to the apex; (B) the second angled surface extending from the flat surface to the apex; (C) the undercut being defined as a gap between the first angled surface and the attachment portion; and (iii) the first angled surface and the attachment portion being joined by a base.