The entry carrier-route price level, requiring at least 10 pieces on a route. Flats have this level; letters do not, so a sparse letter route prices as automation instead.
Carrier Route Basic
Updated 2026-07-24
CR Basic
Other
Definition reviewed 2026-07-24. Plavidian reference, written from the USPS Domestic Mail Manual. Final mail classification, postage, and preparation are confirmed after list processing and production review.
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