Filter arrangements; housings; assemblies; and, methods

An air filter cartridge arrangement removeably installable in an air cleaner housing during use;

• the air filter cartridge arrangement comprising:
• (a) a main filter media pack having:
• (i) an inlet flow end and an opposite outlet flow end;
• (ii) a plurality of inlet flow flutes open at the inlet flow end and closed to passage of unfiltered air from the outlet flow end;
• (iii) a plurality of outlet flow flutes closed to passage of unfiltered air therein and open to outlet flow at the outlet flow end;
• and,
• (iv) a non-circular cross-sectional shape comprising an oval shape with two, opposite, straight sides and two, opposite, curved ends;
• and,
• (b) an arrangement surrounding the main filter media pack including at least a first oval radially outwardly projecting ribs thereon;
• (i) the arrangement surrounding the media pack including a handle member under which at least a portion of a person's fingers can fit, between the handle member and a portion of the arrangement surrounding the media pack, at a location in overlap with a curved end of the oval shape;
• and,
• the first rib being positioned:
• between the portion of the handle member under which at least a portion of a person's finger can fit and the outlet flow end;
• and, spaced from the outlet flow end toward the inlet flow end;
• and,
• (c) an arrangement positioned on the media pack including a portion surrounding the media pack adjacent the outlet flow end;
• and, including a portion in axial overlap with the outlet flow end of the media pack.