How many high can potatoes be stacked free-standing according to the guidelines?

The guidelines specify that potatoes can be stacked free-standing up to four high. This recommendation is based on maintaining stability and ensuring that the potatoes are not at risk of toppling over, which could lead to damage or spoilage. Stacking them too high might compromise the quality of the potatoes or pose safety concerns in the storage environment. Thus, the specified limit of four high strikes a balance between efficient use of space and protecting the integrity of the product.