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1.3 Dimensional Weight Price for Low-Density Parcels to Zones 1-9 See Notice 123-Price List for applicable Priority Mail retail prices. The minimum postage amount per addressed piece is the 1-pound price. For example, if a piece weighs 1.2 pounds, the weight (postage) increment is 2 pounds.
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Designing Letter and Reply Mail (PUB 25).
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