There are many different options available for
folding a promotional mailer. They can have parallel folds and right angle folds.
Parallel folds run parallel to each other. Right angle folds are folded perpendicular
to the previous fold. Promotional mailers generally consist of parallel folds
but right angle folds can be used in addition to the parallel folds.
A score may be added to the mailer in
the location of the fold to help it fold in the proper location. A score
is used when the location of the fold is critical, when using heavier
weight stock or when folding against the grain of the paper. The proper
time to use a score is usually determined by the manufacturer.
A perforation is used on
a fold where a panel needs to be detached from the mailer,
such as on a reply card.
When the mailer is folded, the panels that are folded to the inside
must be slightly smaller than the outside panels so that they do not
interfere with the other folds. The panels on either edge can be smaller
than the other panels if it is necessary for the design of the mailer.
If the panel is a business reply card, it must meet the size requirements
for business reply mail. See Postal
Regulations - Business Reply Mail.
Note: The finished
folded mailer and any reply mail piece must meet the minimum
weight requirements set up by the USPS.
For details, see Postal
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