Patent ID: 8840699

Claim:
An air cleaner assembly comprising: (a) a housing defining an interior and comprising separable first and second housing sections; (i) the first section comprising an inlet section including an air flow inlet therein; (ii) the second section comprising an outlet section having an air flow outlet therein; (iii) the housing having a first housing cross-sectional dimension that is no more than 50% of a second cross-sectional dimension taken perpendicular to the first housing cross-sectional dimension; (b) a serviceable filter cartridge removably mounted within the housing interior; the serviceable filter cartridge comprising: (i) a media pack comprising fluted media secured to facing media to define opposite inlet and outlet flow faces with flutes extending therebetween; the opposite inlet and outlet flow faces corresponding to opposite ends of the media pack; (A) the media pack being configured so that air cannot pass from the inlet flow face to the outlet flow face without filtering flow through the media; (ii) a housing seal member comprising a perimeter seal member extending around the media pack; the perimeter seal member being positioned between the first housing section and the second housing section; (iii) the media pack having a non-circular media pack cross-sectional shape in a plane perpendicular to the fluted media and the direction of flow through the media pack; the cross-sectional shape having a first cartridge cross-sectional dimension that is no more than 50% of a second cartridge cross-sectional dimension perpendicular to the first cartridge cross-sectional dimension; each of the first cartridge cross-sectional dimension and second cartridge cross-sectional dimension being taken in a plane perpendicular to the direction of flow through the media pack; and, (c) the first housing section having an end wall that faces the inlet flow face of the media pack and which has an end wall portion that slants toward the media in extension in a direction across an end of the housing from adjacent the air flow inlet and in extension in the direction of the second housing cross-sectional dimension; (i) the air flow inlet being positioned off-set from a central plane through the media pack, which plane extends in a direction of flow through the media pack and perpendicular to the second cross-sectional dimension of the media pack; and, (ii) the air flow inlet not being directed in a direction parallel to air flow through the media pack toward the air flow outlet.