Air filter arrangement; assembly; and, methods

An air filter cartridge comprising:

• (a) a filter media pack having first and second opposite flow faces;
• the filter media pack comprising fluted filter media secured to facing media to define inlet and outlet flow channels extending between the first and second, opposite, flow faces;
• (i) the filter media pack being closed to passage of air therethrough, from the first flow face to the opposite second flow face, without filtering passage through the media;
• and,
• (ii) the filter media pack having a configuration with the first flow face being planar in extension across a direction of flow through the media pack;
• (b) a housing seal arrangement comprising a perimeter seal extending around the media pack;
• (i) the housing seal arrangement being positioned spaced from at least one of the first and second, opposite, flow faces;
• (ii) the perimeter seal having a first section that extends across a portion of the media pack;
• along a path not continuously parallel to the first flow face;
• and,
• (iii) the housing seal arrangement including a base and a pinch seal lip;
• (A) the pinch seal lip being positioned on, and molded integral with, the base;
• and,
• (B) the base and pinch seal lip defining a trough between at least a portion of the pinch seal lip and the media pack.