Air filter arrangement

An air cleaner assembly comprising:

• (a) a housing defining an interior having an inlet section, an outlet section and a housing separation region defined by opposite flanges;
• (i) the outlet section including an air flow outlet;
• and
• (ii) the inlet section including an air flow inlet;
• (iii) the housing having a first pair of opposite housing sides and a second pair of opposite housing sides;
• (A) the first pair of opposite housing sides, each having a length, in extension between each member of the second pair of opposite sides, that is larger than a length of each one of the second pair of opposite sides in extension between each one of the first pair of opposite sides;
• and,
• (b) a filter cartridge positioned within the housing interior;
• the filter cartridge comprising:
• (i) a media pack comprising a stack of strips of fluted media secured to facing media to define a media pack with opposite inlet and outlet flow faces and with inlet and outlet flutes directed therebetween;
• and
• (ii) a housing seal arrangement surrounding the media pack in a plane not parallel to either one of the inlet face and outlet face;
• (iii) the filter cartridge being positioned with an angle X between the outlet flow face and the air flow outlet of at least 10° and not greater than 80° and with the strips of fluted media defining media planes directed at an angle greater than 10° and not more than 80° relative to the air flow outlet;
• and,
• (iv) the media pack being a blocked, stacked arrangement wherein each face and side of the media pack intersects each adjacent face and side at 90 °;
• (v) the media pack having a first pair of opposite sides and a second pair of opposite sides;
• (A) each member of the first pair of opposite sides having a first dimension of length, in a direction parallel to the inlet face and outlet face;
• and,
• (B) each member if the second pair of opposite sides having a second dimension of length, in a direction parallel to the inlet face and outlet face;
• (C) the first dimension of length being longer than the second dimension of length;
• and,
• (D) the seal arrangement extending across each member of the first pair of opposite sides, along a path not parallel to the inlet face and outlet face;
• (c) the housing separation region, in extension across the first pair of opposite sides, extending at an angle non-parallel to the outlet flow face.