Envelope C4 NC Koperty SK pack of 50 — plain paper envelopes for A4 documents

NC Koperty C4 envelopes (pack of 50) are plain paper mailing envelopes sized to hold unfolded A4 documents. Designed for postal and office use, each envelope provides a simple protective sleeve for invoices, contracts, brochures and other printed materials. The envelopes are made from uncoated paper and feature a standard flap for manual sealing, offering a practical solution for everyday correspondence and document dispatch.

Advantages

These C4 envelopes combine a straightforward design with functional dimensions that match A4 documents without folding. The plain paper surface is suitable for writing addresses or applying labels, while the pack quantity of 50 supports regular mailing needs in small offices or home use. Their light weight reduces postage costs compared with bulkier packaging and they stack easily for storage.

Suitable for

• Sending invoices, contracts and legal documents without folding
• Mailing brochures, catalogs and promotional inserts
• Internal office distribution of reports and printouts
• Archival storage of A4 documents that need quick access

Key specifications

• Format: C4 — fits unfolded A4 documents
• Material: plain uncoated paper
• Finish: matte, writable surface suitable for labels and handwriting
• Closure: standard manual flap for sealing
• Pack size: 50 envelopes

How to use

Insert the A4 document into the envelope ensuring edges are aligned to avoid creasing. Use the flap to seal the envelope manually; if necessary, apply adhesive tape or a glue stick for additional security. Address the envelope by handwriting directly on the paper or attach a printed label in the designated area. For mailing, place any required postage and customs documentation on the exterior as per postal service requirements.

Usage recommendations

For reliable presentation and protection, avoid overfilling the envelope and keep moisture exposure to a minimum. Use appropriate postage based on the envelope weight and contents, and consider adding a clear address window or label if machine sorting or automated processing is expected.