Flat-Size and Irregular Parcel Mailpieces
Updated September 2005
This CSR discusses balancing (or
leveling) of bundles for those limited situations in which the pieces that would
ordinarily constitute the “last bundle” for a presort destination are
less than the minimum amount required for the destination.
In addition, this CSR clarifies
rate eligibility for the preparation of bundles of flat-size and irregular parcel
mailpieces prepared under the following circumstances:
When the pieces that would ordinarily be in the “last bundle” or “balanced
bundle” for a presort destination are fewer than the minimum number required
for the destination.
When the weight of the last bundle or balanced bundle is less than the required
Mailers use software that balances
(or levels) the number of pieces or the weight of their bundles. This may result
in multiple bundles with fewer than the required minimum number of pieces or less
than the required minimum weight for a presort destination. The number of bundles
created because of balancing may not exceed the number of bundles that would have
resulted if only the last bundle did not meet the minimum requirements.
We allow mailers to prepare a last
bundle or a balanced bundle for a presort destination when the bundle is less than
the minimum weight or it contains fewer than the minimum number of pieces without
loss of rate eligibility providing the “logical bundle” to a presort
destination meets the minimum quantity for the rate claimed.
For example, consider two mailings
of bundles of flat-size Standard Mail pieces that mailers might bundle and place
- Mailing A has 17 pieces to a presort
destination; 12 pieces in one bundle reach the maximum height for one bundle to
maintain its integrity, leaving just 5 pieces for the “last bundle."
The mailer could make one bundle
of 12 pieces and one “last bundle” of 5 pieces (a total of two bundles)
as allowed under DMM 705.8.9.4*. Alternatively, the mailer could balance the
bundles by placing 9 pieces in one bundle and 8 pieces in the other bundle (still
just two bundles).
- Mailing B has 18 pounds of pieces
to a presort destination; 10 pounds in one bundle reach the maximum height for one
bundle to maintain its integrity.
This mailer could make one bundle
of 10 pounds and one “last bundle” of 8 pounds (a total of two bundles);
or the mailer could balance the bundles by making two bundles of 9 pounds each (still
just 2 bundles).
In both cases, the mailers are creating
the same number of bundles, but are balancing them to create more stable bundles.
Bundle balancing may result in bundles to one presort destination having less than
the minimum number of pieces or being of less than the minimum weight. However,
in all cases, this must NOT create additional bundles for the Postal Service to
Similar balancing (or leveling)
also is acceptable for bundles of flat-size Periodicals and Package Services mailpieces
placed in sacks or on pallets, bundles of Standard Mail flat-size pieces placed
in sacks, bundles of Standard Mail, Periodicals, and Package Services irregular
parcels placed in sacks or on pallets, and for bundles of First-Class Mail flat-size
mailpieces placed in flat trays.
*See also DMM 705.8.9.3, 705.8.9.5,
335.2.7, 345.2.10, 365.2.8, 375.2.7, 385.2.7, 445.2.8, 465.2.6, 475.2.6, and 485.2.6.
United States Postal Service
Washington DC 20260-3436