(EN) Provided is a basket for storing food items in a temperature-controlled environment and a refrigeration appliance including such a basket. The basket includes a substantially-horizontal platform coupled to two or more upwardly- extending walls to form an open container for receiving the food items to be stored in the temperature-controlled environment. A partition is provided for dividing the basket into two or more storage regions. A guide is coupled to at least one of the platform and the walls, and extends substantially parallel to an upper perimeter of at least one of the walls to define a range of adjustment of the partition. A fastener securely couples the partition to the guide to be adjusted to two or more different locations where the partition is to divide the basket.