Patent attributes
An inventory system includes a first inventory holder positioned in a first climate-controlled zone of a workspace that is at a below-freezing temperature. The system also includes a second inventory holder positioned in a second climate-controlled zone that is at an above-freezing refrigerated temperature. The system also includes a third inventory holder positioned in a third climate-controlled zone that is at ambient conditions. The system also includes a management module operable to receive an order for the first inventory item, an order for the second inventory item, and an order for the third inventory item. The management module instructs a first mobile drive unit to transport the first inventory holder to an inventory station, instructs a second mobile drive unit to transport the second inventory holder to the inventory station, and instructs a third mobile drive unit to transport the third inventory holder to the inventory station.