Levels at which the air freight rate per 100 pounds decreases. Examples of levels: 100 lbs., 250 lbs., 500 lbs., 1,000 lbs.

Levels at which the freight rate per 100 pounds decreases because of substantial increases in the weight of the shipment.

The breaks given in a rate schedule at which the charges per specified weight decrease as the shipment increases in weight, and which allow the option of utilizing a higher weight level than the actual weight involved at a lower rate, resulting in reduced assessed charges.