A pack wall carton selection and replenishment system comprising: a delivery cart with a delivery cart controller configured to receive information representing a replenishment shipping carton to be retrieved from a shipping carton supply area and delivered to a pack wall, provide for retrieving one or more shipping cartons from the shipping carton supply area, actuate a cart indicator assembly to identify a cart partition where to place the retrieved shipping cartons on the delivery cart, actuate a delivery cart indicator assembly to identify the replenishment shipping carton to be placed on the pack wall; and, a pack wall controller in communication with the delivery cart controller configured to receive an order item information, actuate a first pack wall indicator assembly to indicate a desired shipping carton to be used for packing an items represented by the order item information.