A spout controls grain or other particulate material falling through and being discharged from a conduit. An array of plates is mounted at the discharge end of a chute to control the flow of the particulate material there from. A counterbalance mechanism is coupled to each of the plates and can be precisely adjusted to provide the appropriate counterbalancing force on the plates to control the particulate material flow without damage to the particulate material and to minimize the dust generated in the flow of the material. A divider is mounted in the stream of material flowing to the array of plates to reduce the dust escaping the flowing material.