Patent ID: 7323029

Claim:
A method of installing a filter cartridge into an air cleaner housing; the method including steps of: (a) providing a filter cartridge comprising: (i) a z-filter media construction comprising a fluted sheet secured to a facing sheet, and having opposite inlet and outlet flow faces; (ii) a sheath positioned surrounding the z-filter media construction; (iii) a seal arrangement comprising a rubber like material positioned to axially seal the filter cartridge inside of the housing; (iv) a projection arrangement including projections extending outwardly from opposite sides of the sheath; (b) providing an air cleaner housing with: first and second, opposite, ends; and a sidewall defining a top, a bottom and opposite sides; the housing sidewall including an access cover removable from a remainder of the housing; (c) removing the access cover; (d) inserting the filter cartridge through an access opening generated by removal of the access cover; the step of inserting including directing the projections extending outwardly from opposite sides of the sheath respectively toward the opposite sides of the housing; and (e) sealing the filter cartridge in position and closing the housing by positioning the access cover in place; the step of sealing including: (i) engaging the projections extending outwardly from opposite sides of the sheath with structure inside of the housing and biasing the filter cartridge against an end of the housing with the seal arrangement providing an axial seal between the filter cartridge and the housing; and (ii) retaining biasing engagement between the housing and the filter cartridge, while the access cover is in position on the housing.