Rolls and tubes do not qualify for mailpiece cubic prices. 50 cubic foot or less, weigh 20 pounds or less, and the longest dimension may not exceed 18 inches.
For example, a dimension of a piece measuring 12-3/8 inches is rounded down to 12-1/4 inches. Cubic prices are not based on weight, but are charged based on zone and the mailpiece’s cubic measurement, with any fraction of a measurement rounded down to the nearest 1/4 inch.Flat Rate prices are not based on weight and zone but are charged a flat rate regardless of actual weight (up to 70 pounds) of the mailpiece and domestic destination.08 pound, the weight (postage) increment is 1 pound. Except for cubic items (see 1.1c), customers mailing Priority Mail mailpieces are charged per pound of the mailpiece any fraction of a pound is rounded up to the next whole pound.USPS Marketing Mail Eligibility Decision TreeĢ20 Commercial Mail Priority Mail 223 Prices and Eligibilityģ.0 Basic Eligibility Standards for Priority Mail 1.0 Prices and Fees 1.1 Price Application.