Clasp envelopes feature a two-prong metal or brass clasp that fastens through a reinforced hole in the flap, holding the envelope securely closed without any adhesive. To close: bend the prongs flat. To open: bend them up and pull the flap. Fully reusable — no adhesive, no tearing. Available in sizes from coin envelopes to large 15″ × 20″ catalog mailers, they’re the standard for interoffice routing, document files, and anything accessed multiple times. See how the clasp mechanism works in the guide below.
Clasp Envelope Key Features
- Reusable: The metal clasp opens and closes many times without damage.
- No adhesive needed: Closes securely without glue, moisture, or peel strips.
- Wide size range: Available from coin-envelope size through large catalog/mailing sizes.
- Best for: Interoffice routing, legal files, document storage, photos, reports, catalogs.
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