Patent ID: 7270692

Claim:
A filter element arrangement comprising: (a) a media pack having a substrate comprising first and second opposite flow faces and a plurality of flutes wherein in said media pack; (i) each of said flutes have a first end portion adjacent to said first flow face and a second end portion adjacent to said second flow face; (ii) selected ones of said flutes being open at said first end portion and closed at said second end portion; and selected ones of said flutes being closed at said first end portion and open at said second end portion; (iii) said substrate comprises a cellulosic filter substrate or a substrate comprising a cellulosic and synthetic blend; the substrate at least partially covered by a layer comprising fine fiber, the fine fiber comprising: a polymer selected from a polyvinyl chloride, a poly urethane or a polyvinyl alcohol; a combination of an additive and a polymer selected form a polyvinyl chloride, a poly urethane or a polyvinyl alcohol or a combination of a crosslinking agent and a polymer selected form a polyvinyl chloride, a poly urethane or a polyvinyl alcohol; the fine fiber comprising a fiber with a diameter of about 0.01 to 0.5 microns; and (b) a sealing system including a frame construction and a seal member.