Container capacity (C_c) is one of the four basic variables within the generic kanban sizing calculation. However, C_c is often not treated as a variable but more as a constant, predetermined quantity, especially if the lean practitioner seeks to use existing supplier packaging, reusable dunnage, or standard bin sizes or racks.

Often that is the best, least wasteful way. Although, sometimes it is not prudent from an inventory management or ergonomic perspective.

Oversized bins may facilitate the waste of excess stock on hand and expose an operation to shelf-life expiration risk, damage, and obsolescence. High container capacities can also mean heavy, large, or unwieldy containers, and thus increase the risk of ergonomic injuries and require expensive, large, and clumsy ways of moving the containers.

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