Envelope NC Koperty C4 with Self-Seal Strips, Brown, Gummed with Expanded Sides and Bottom, Pack of 25

NC Koperty C4 envelopes in brown are designed to hold documents up to C4 size with added capacity and protection. Each envelope in this pack of 25 features a self-seal strip for quick closure and a gummed construction with expanded sides and bottom (gusseted design) to accommodate thicker or multiple items such as catalogs, brochures and flat objects that need a more roomy envelope.

Advantages

The self-seal strips enable fast, secure closing without the need for additional adhesive or tape, while the gummed, gusseted structure provides extra internal volume and improved protection against bending. The brown paper construction offers a neutral, professional appearance and reliable durability for mailing and storage. Pack of 25 ensures a consistent supply for regular office or business use.

Suitable for

• Mailing documents and mailings up to C4 size
• Sending catalogs, brochures and printed materials
• Storing flat items that require extra internal space and protection
• Office and administrative dispatches requiring quick closure

Key specifications

• Format: C4 (suitable for unfolded A4 and similar-sized documents)
• Color: brown
• Quantity: pack of 25 envelopes
• Closure: self-seal strip
• Construction: gummed with expanded sides and bottom (gusseted)
• Intended use: mailing and storage of flat paper items

How to use

Insert the documents or items flat into the envelope, making sure contents fit within the gusseted space. Remove the protective liner from the self-seal strip and press firmly along the flap to secure closure. For heavier or bulkier contents, ensure the gusset is expanded evenly to distribute thickness and avoid overfilling; if necessary, reinforce the flap or seams with tape for added security during transit.

Usage recommendations

For reliable delivery, avoid overstuffing beyond the gusset capacity and use additional reinforcement for heavy or irregularly shaped items. Store envelopes in a dry, cool place to maintain adhesive performance of the self-seal strip and the integrity of the gummed areas.