An air cleaner assembly comprising: a housing having at least one sidewall , the housing defining: an interior cavity configured to receive an air filter element ; an inlet opening configured to receive air to be filtered; a first outlet opening configured to discharge filtered air, and a second outlet opening configured to discharge filtered air; a noise suppression chamber formed by the at least one sidewall of the housing and an exterior sidewall spaced from the at least one sidewall of the housing , wherein the second outlet opening extends through the at least one sidewall of the housing in a region of the noise suppression chamber such that filtered air is delivered through the second outlet opening into the noise suppression chamber , and the noise suppression chamber has an airflow outlet configured to discharge air from the noise suppression chamber , the noise suppression chamber being suitable for acoustically dampening the airstream passing through it; wherein the at least one sidewall has a cylindrical shape, wherein the exterior sidewall is planar such that a distance between the planar exterior sidewall and at least one sidewall varies across a curvature of the at least one sidewall ; wherein the housing has a length, the noise suppression chamber has a length, and the length of the noise suppression chamber is parallel to the length of the housing ; and wherein the second outlet opening and the airflow outlet are positioned at opposite ends along the length of the noise suppression chamber . a housing having at least one sidewall , the housing defining: an interior cavity configured to receive an air filter element ; an inlet opening configured to receive air to be filtered; a first outlet opening configured to discharge filtered air, and a second outlet opening configured to discharge filtered air; an interior cavity configured to receive an air filter element ; an inlet opening configured to receive air to be filtered; a first outlet opening configured to discharge filtered air, and a second outlet opening configured to discharge filtered air; a noise suppression chamber formed by the at least one sidewall of the housing and an exterior sidewall spaced from the at least one sidewall of the housing , wherein the second outlet opening extends through the at least one sidewall of the housing in a region of the noise suppression chamber such that filtered air is delivered through the second outlet opening into the noise suppression chamber , and the noise suppression chamber has an airflow outlet configured to discharge air from the noise suppression chamber , the noise suppression chamber being suitable for acoustically dampening the airstream passing through it; wherein the at least one sidewall has a cylindrical shape, wherein the exterior sidewall is planar such that a distance between the planar exterior sidewall and at least one sidewall varies across a curvature of the at least one sidewall ; wherein the housing has a length, the noise suppression chamber has a length, and the length of the noise suppression chamber is parallel to the length of the housing ; and wherein the second outlet opening and the airflow outlet are positioned at opposite ends along the length of the noise suppression chamber . <EOS>