Shipping weight is used to calculate the fulfillment fees. The shipping weight is calculated based on the item’s unit weight or dimensional weight. For small standard and special oversize items, the shipping weight is the unit weight. For large standard items and items within the other oversize bands, the shipping weight is determined by using the greater value of unit weight or dimensional weight. The dimensional weight is equal to the unit volume (length x width x height) divided by 139. The dimensional weight for oversize items assumes a minimum width and height of 2 inches. The total shipping weight for each unit if less than 1 pound is rounded up to the nearest whole ounce. If it weighs more than 1 pound, it’s rounded up to the nearest whole pound.