The main advantage of a smaller kanban size is the lower
level of in-process inventory. From the viewpoint of a manufacturer, inventory means money.
Smaller kanban size facilitates a faster movement of materials between stations. Therefore, the
manufacturing resources are easily free from production, which may help in other manufacturing
activ- ities such as Research and Development projects. However, a 100% fill rate is not easily
achievable when a smaller
kanban size is implemented.