Envelope HERLITZ C6 self-seal with transparent window pack of 1000

HERLITZ C6 self-seal envelopes with a transparent window, pack of 1000, are designed for sending C6-sized letters and documents that require a visible recipient address or invoice. Each envelope includes a clear polymer window positioned to display standard address formats from inside the envelope. The self-seal (peel-and-seal) closure enables fast and secure sealing without the need for additional tape, supporting high-volume mailing and courier dispatches.

Advantages

These envelopes combine a transparent window for address visibility with a peel-and-seal strip for quick closure, reducing handling time in mailrooms. Supplied in a large pack of 1000, they are suitable for repetitive mailing tasks and help maintain consistent presentation of documents. The standard C6 format fits common folded A4 inserts and invoices, while the polymer window provides clear readability of printed addresses.

Suitable for

• Office mailings and administrative correspondence
• Invoice and statement dispatches
• Bulk mailing and mass-posting operations
• Courier and logistics documentation
• Enclosures where address visibility is required

Key specifications

• Format: C6, suitable for folded A4 documents
• Closure: self-seal (peel-and-seal strip)
• Window: clear polymer window positioned for standard address layout
• Quantity: pack of 1000 envelopes
• Intended use: mailing letters, invoices and small documents

How to use

Insert the folded document or invoice into the envelope so that the recipient address aligns with the transparent window. Remove the protective strip from the peel-and-seal closure and press the flap firmly to secure the envelope. No additional adhesive or tape is required. For optimal alignment, fold documents along standard C6 dimensions before insertion.

Usage recommendations

Store the envelopes in a dry, room-temperature environment to avoid warping of the paper or window film. When preparing bulk mailings, feed envelopes into inserters or mailing machines according to the manufacturer’s guidance; test a small batch first to confirm alignment and machine compatibility.