The present technology provides a system for supplying fresh air to downstream components. The system comprises a housing with a first end and a second end, a first plurality of partitions disposed in the housing, and a second plurality of partitions disposed in the housing. The housing comprises a base portion and first and second opposing sidewalls extending from the first end to the second end. Each of the first plurality of partitions includes at least one first ventilation opening associated with each of the plurality of compartments. Each one of the second plurality of partitions comprises at least one partition duct extending through the plurality of partition rows and at least one second ventilation opening connecting the at least one partition duct to associated ones of the plurality of compartments.