An air cleaner arrangement for filtering air includes a filter element receivable inside a housing. The filter element longitudinally extends along an axis line between a first end surface and a second end surface. The filter element can be shaped as a tapering polyhedron including at least one planar exterior surface that depends from the first end surface to the second end surface with respect to the axis line. When received in the housing, the depending exterior surface diverges away from the sidewall of the housing to create an expanding plenum. The plenum facilities even distribution of air along the axial length of the filter element.