What is considered a nonmachinable parcel?

A nonmachinable parcel is defined by characteristics that prevent it from being processed through standard automated sorting equipment. In this context, a parcel with an irregular shape fits this definition well. Irregular shapes can include items that are too bulky, unevenly shaped, or have protrusions that disrupt the flow of automated machines designed to handle regular, standard-sized packages. As a result, these irregular parcels must be handled manually, which classifies them as nonmachinable.

The other options may have their own handling requirements or limitations but do not specifically relate to the processing rules concerning nonmachinable items in the same way. For example, a parcel that is too light could still be processed by machines designed for various weights, while perishable items may require special handling but are not inherently nonmachinable. Similarly, a parcel sealed with tape typically does not affect machinability unless it has other characteristics that do. Thus, the defining factor for a nonmachinable parcel remains its irregular shape.