Package Restrictions


Service Package Restrictions Notes
First-Class Mail Large Envelope/Flat Max weight of 13oz. Minimum dimensions: 6-1/8" x 11-1/2". Maximum dimensionss: 12" x 15". Must be between 1/4" & 3/4" in thickness. ***Non-Trackable & Non-Refundable***
First-Class Packages Parcel/Box Max weight of 15.99oz. Dimensions cannot exceed 22" x 18" x 15" Prices for 15.99oz are the same as 15oz.
Priority Mail Parcel/Box Max weight of 70lbs. Maximum size of 108" in combined length and girth. Must utilize own packaging (box, poly-mailer, bubble mailer, etc.) or USPS Mailing Box.
Priority Mail Regional A Box Max weight of 15lbs. Must use corresponding Regional A label with USPS Regional A box.
Priority Mail Regional B Box Max weight of 20lbs. Must use corresponding Regional B label with USPS Regional B box.
Priority Mail Cubic Max weight of 20lbs. The package will only qualify if the equation: (L" x W" x H" / 1728 ≤ 0.5) is true. Must utilize own packaging or USPS Mailing Box. Cubic Rate will automatically be applied to packages that qualify.
Priority Mail Flat Rate Envelope Max weight of 70lbs. Internation maximum weight of 4lbs. Must use corresponding Flat Rate Envelope label with USPS provided Flat Rate Envelope.
Priority Mail Small Flat Rate Box Max weight of 70lbs. Must use corresponding Small Flat Rate label with USPS provided Small Flat Rate Box.
Priority Mail Medium Flat Rate Box Max weight of 70lbs. Must use corresponding Medium Flat Rate label with USPS provided Medium Flat Rate Box.
Priority Mail Large Flat Rate Box Max weight of 70lbs. Must use corresponding Large Flat Rate label with USPS provided Large Flat Rate Box.