What is the minimum weight of a 5-digit sack in a USPS Marketing Mail flats mailing?

In a USPS Marketing Mail flats mailing, the minimum weight requirement for a 5-digit sack is 15 pounds. This specification is established to ensure that mailings are processed optimally and allows for more efficient handling and delivery within the postal system. The requirement for weight is designed to balance the operational capacities of the USPS while also providing a standard for mailings to be clearly defined in terms of their size and weight for pricing and processing.

The options reflecting lower weights, such as 5 pounds or 10 pounds, do not meet the established guidelines, which are set to ensure that postage reflects the processing costs and logistics involved in moving such a mailing through the USPS network. The minimum weight requirement helps to streamline the sorting and delivery processes, ensuring that each mailing is handled consistently. Therefore, having 15 pounds as the minimum weight suitably aligns with USPS policies regarding Marketing Mail flats.