Rules for Folded Self Mailers (FSM)

Mailing your brochures? The US Postal Service has rules for Folded Self Mailers (FSM). These standards increase mail processing efficiency. Use the examples below to make sure your mail piece complies with tabbing standards. Addresses must appear as shown in the examples, and accordion folds (z-folds), do not self-mail.


double gate fold
Double Gate Fold
4-panel double parallel fold
4-Panel Double Parallel Fold
4-panel roll fold
4-Panel Roll Fold
4-page refold
4-Page Refold
3-panel parallel fold
3-Panel Parallel Fold
folded flap
Folded Flap
all accordion folds
All Accordion Folds

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