Open-side design permits overall printing. Remittance Large flap can be printed to contain any message. Used for coupons, credit information, applications, statements, etc. Catalog Open-end style. Wide seams with heavy gummed flaps provide good protection for mail handling of catalogs, magazines, reports, etc.
Metal clasp Strong and durable.
Ideal for mailing bulky papers. Can be opened and closed many times. Many have deckle-edge flaps. Widely used for invitations, announcements, and greeting and social cards.