Abstract: An induction air handling apparatus and methods are disclosed. The induction air handling apparatus includes an air plenum extending along one end of an air mixing chamber and having a first wall forming a partition between the air plenum and the air mixing chamber, the air plenum being formed by extrusion, and having an air inlet disposed at one end thereof and numerous openings machined through the first wall. The induction air handling apparatus also includes air nozzles extending into the air mixing chamber, each nozzle having an inlet in fluid communication with the air plenum through a corresponding opening in the first wall of the air plenum, and an outlet opening into the air mixing chamber. The air nozzles are formed by machining and are rigidly connected to the first wall, to reduce audible noise when pressurized air passes through the air nozzles.