

1.1.3 All Machinable LettersĪll machinable letters must meet the additional standards for automation-compatible letters in 3.0.

The maximum weight for USPS Marketing Mail machinable letters is 3.5 ounces (0.2188 pound). The maximum weight for Presorted First-Class Mail machinable letters is 3.5 ounces (0.2188 pound).

Subject to additional dimensional restrictions in 3.0, depending on mailpiece design.Įxhibit 1.1.1 Maximum Corner Radius for Letter-Size, Card-Type and Flat-Size Mailpiecesġ.1.2 Weight Standards for Machinable Letters.Within an aspect ratio (length divided by height) of 1.3 to 2.5, inclusive.Letter-size, card-type mailpieces made of cardstock may have finished corners that do not exceed a radius of 0.125 inch (1/8 inch) unless prepared as Customized Market Mail under 243.9.0. Rectangular, with four square corners and parallel opposite sides.Not more than 11-1/2 inches long, or more than 6-1/8 inches high, or greater than 1/4-inch thick.For pieces more than 4-1/4 inches high or 6 inches long, or both, the minimum thickness is 0.009.(Pieces not meeting the 0.009 thickness are nonmachinable letters under 2.1.) Not less than 5 inches long, 3-1/2 inches high, and 0.007-inch thick.USPS Marketing Mail Eligibility Decision TreeĢ00 Commercial Letters, Cards, Flats, and Parcels 201 Physical Standardsġ.0 Physical Standards for Machinable Letters and CardsĢ.0 Physical Standards for Nonmachinable Lettersģ.0 Physical Standards for Machinable and Automation Letters and Cardsĥ.0 Physical Standards for Nonautomation FlatsĦ.0 Physical Standards for Automation FlatsĨ.0 Additional Physical Standards by Class of Mailĩ.0 Customized MarketMail 1.0 Physical Standards for Machinable Letters and Cards 1.1 Physical Standards for Machinable Letters 1.1.1 Dimensional Standards for Letters.Designing Letter and Reply Mail (PUB 25).
