A low-profile particulate handling assembly (24) is provided for use in conjunction with a downstream treating device, such as a seed treater unit (22). The assembly (24) includes a plurality of juxtaposed particulate bins (34) and a surmounting turret assembly (36) designed to successively deliver particulates to the bins (34). The particulates within the bins (34) are delivered to the downstream treating device through respective lower outlets (110) each equipped with an adjustable slide gate assembly (112) and a lower, multiple-chute assembly (114). Preferably, each bin (34) has a top wall (50) which in plan configuration approximates a sector of a circle, planar sidewalls (64), and downwardly tapered, arcuate sidewall structure (58) leading to the lower outlet (110) in this fashion, the bins (34) can be grouped with the sidewalls (64) in close adjacency, and with the outlets (110) located to feed into a single inlet (26) of the downstream treating device.
