Air filter arrangement; assembly; and, methods

An air filter cartridge comprising:

• (a) a filter media pack having a first flow face and a second, opposite, flow face, wherein:
• (i) the filter media pack includes filter media arranged between the first flow face and the second, opposite, flow face;
• (ii) the filter media pack having a rectangular cross-sectional shape, in a direction perpendicular to a central flow axis extending between the first flow face and the second, opposite, flow face;
• (iii) the filter media pack comprising four sides extending between the first flow face and the second, opposite, flow face, wherein the four sides include a first pair of first and second opposite sides, and a second pair of first and second opposite sides;
• and
• (iv) the second pair of first and second opposite sides are longer than the first pair of first and second opposites sides;
• (b) a first end piece sealing the first side of the first pair of first and second opposite sides of the filter media pack;
• (c) a second end piece sealing the second side of the first pair of first and second opposite sides of the filter media pack;
• (d) a preform extending around a perimeter of the filter media pack four sides and around the first end piece and the second end piece, wherein:
• (i) the preform comprises a seal support projecting outwardly from a remainder of the preform;
• and
• (e) a housing seal arrangement comprising a seal member located on the preform seal support, wherein the seal member comprises an axially directed seal, in use, wherein
• (i) the seal member is not slanted in extension across the first pair of first and second opposite sides of the filter media pack.