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USPS Machinable vs. non-machinable

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I found out that that default setting for USPS Parcel post packages is "non-machinable". This basically means that your package is unique in the ways below. Just wanted to alert people to the difference in the charges because non-machinable is higher than machinable and in most cases will be higher than priority mail. Most packages will be "machinable" so you will have to change the machinable setting in the USPS.php file in the function "quote" to "True".


a. A parcel more than 34 inches long, 17 inches wide, or 17 inches high.


b. A parcel less than 6 inches long, 1/4 inch thick, or 3 inches high.


c. A parcel that weighs less than 6 ounces or more than 35 pounds.


d. A parcel containing more than 24 ounces of liquid in glass containers, or 1 gallon or more of liquid in metal or plastic containers.


e. An insecurely wrapped or metal-banded parcel.


f. A can, roll, or tube, or wooden or metal box.


g. Books, printed matter, or business forms weighing more than 25 pounds.


h. A high-density parcel weighing more than 15 pounds and exerting more than 60 pounds per-square-foot pressure on its smallest side.


i. A film case weighing more than 5 pounds or with strap-type closures, except any film case the USPS authorizes to be entered as a machinable parcel under C050 and to be identified by the words ?Machinable in United States Postal Service Equipment? permanently attached as a nontransferable decal in the lower right corner of the case.


j. Parcels with characteristics (such as inadequate packaging) that could result in damage to the contents of the mailpiece, other parcels, or postal machinery if mechanical sortation is used.

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