Envelope MAILmedia Kuvermatic C6/5 114 x 229 mm, self-sealing windowless

MAILmedia Kuvermatic C6/5 envelope sized 114 x 229 mm is a windowless, self-sealing mailing envelope designed for standard correspondence and printed materials that fit the C6/5 format. The envelope offers a plain face for privacy and a reliable closure mechanism that eliminates the need for moisture or additional adhesive. It is suitable for routine office mailings, invoices, notices and other documents where a secure, compact envelope is required.

Advantages

The self-sealing strip provides fast and consistent closure without licking or wetting, saving time in high-volume mailing. The windowless design protects document content from view and offers a uniform exterior suitable for printing or labeling. Constructed to the C6/5 dimensions, the envelope accommodates folded A4 pages and common invoice formats while remaining compact for postal handling.

Suitable for

• Sending invoices and payment reminders
• Dispatching letters and short printed documents
• Batches of outbound office mail and bulk mailing
• Situations requiring privacy and plain outer surface for labeling

Key specifications

• Format: C6/5
• External dimensions: 114 x 229 mm
• Window: none (windowless)
• Closure type: self-sealing strip
• Intended use: correspondence, invoices, printed documents

How to use

Insert the document folded to fit the C6/5 envelope, align the flap, and remove the protective strip to expose the adhesive. Press the flap firmly along the seal to ensure a complete closure. For bulk mailings, prepare and fold documents to a consistent size before filling envelopes to maintain processing efficiency. If additional security is needed, consider secondary sealing methods such as tape or a printed notice.

Recommendations

Store envelopes flat in a dry environment to prevent moisture absorption and maintain adhesive effectiveness. Avoid prolonged exposure to direct sunlight or high humidity. Use compatible printers or labeling devices on the plain surface and verify postal size and weight rules for efficient mailing.