Envelopes and Folders - The Graphic Design: Reference and Specification - page 86

This two-pocket folder with glued flaps is an economical choice suitable for lightweight
inserts, such as sample sheets or small brochures. It can be easily adapted to a one pock-
et configuration by eliminating one of the flaps. The business card slot can also be deleted
if it isn't necessary. For template see page 94
This three-pocket configuration folds to the same 9” × 12” (228.6 x 304.8 mm) size as the
two-pocket configuration but opens to reveal an additional pocket. The folder features glued
flaps at either end and an unglued flap on the center panel. For template see page 95
Square flaps can accommodate more inserts and bulkier documents than standard
pocket folders. They work especially well for magazine media kits. Be sure to use heavy
or laminated cover stock to achieve the necessary rigidity. For template see page 96