Postal Service Practice Exam 2025 – Comprehensive Study Resource

Irregular parcels are specifically defined by their non-standard shapes and sizes that do not conform to the typical dimensions used for standard or machinable parcels. These parcels often include items that are oddly shaped or oversized, making them difficult to categorize within conventional mailing systems.

Understanding this classification is crucial, as postal services require different handling procedures and pricing structures for irregular parcels compared to standard items. This distinction ensures that both the items being sent and the efficiency of the postal system are appropriately managed, which is essential for maintaining service reliability and minimizing logistical issues.

On the other hand, standard parcels consist of items that fit within usual dimensions, machinable parcels are those that can be processed by automated machines, and letters are typically flat and within specified size limits, all of which do not cover the unique requirements posed by irregular parcels.