An improved air handing system for a particulate metering system is provided. The system includes a flow path with an inlet in communication with an intake and an outlet in communication with one or more discharge points. A blower can be in communication with the flow path at the intake and provide an air flow to the flow path. The system can include a plenum within the flow path and in fluid communication with the blower. A plurality of ports can be disposed on the plenum and within the flow path. Each of the ports can be in communication with a discharge point. The system can further include air flow directing members within the flow path. Each of the air flow directing members can be in communication with a separate one of the ports and one of the discharge points.