Air filter arrangement; air cleaner assembly; and, methods

An air cleaner assembly comprising:

• (a) a housing base;
• (i) the housing base including a perimeter wall and an end;
• the housing base defining an access opening opposite the housing end;
• (ii) the housing base having an inlet section and an outlet section;
• (iii) a portion of the inlet section including an aperture arrangement therethrough;
• and,
• (iv) the housing having an air flow outlet therein;
• (b) an access cover removably mounted on the housing base;
• (i) the access cover including:
• an outer cover;
• a pressure flange;
• and a side arrangement extending between the outer cover and the pressure flange;
• the access cover being positioned on the housing base with the outer cover extending across the access opening in the base;
• (ii) a portion of the side arrangement on the access cover projecting into the housing base to a location surrounded by the housing base and to a location being overlapped by the aperture arrangement through the housing base;
• at least the portion of the side arrangement on the access cover which is overlapped by the aperture arrangement in the inlet section of the housing base having an access cover side arrangement aperture arrangement therethrough;
• and;
• (c) an air filter cartridge operably positioned within the air cleaner;
• the air filter cartridge comprising;
• (i) a media pack having opposite inlet and outlet flow faces and comprising fluted media secured to a facing media oriented with flutes of the fluted media extending in a direction between the first and second, opposite flow faces;
• and,
• (ii) a housing seal arrangement;
• (iii) the air filter cartridge being positioned in the housing with the housing seal arrangement being pressed by the pressure flange on the access cover against a portion of the housing base.