Envelope C5 Sigel DU230 Transparent 25 Pieces

The Sigel DU230 transparent C5 envelope (162 x 229 mm) is a lightweight document envelope designed for secure presentation and storage of C5-format sheets. Crafted from clear, durable film with a paper flap, the envelope combines visibility of contents with protection against dust and light handling. Each pack contains 25 envelopes with a nominal weight of 100 g per pack, suitable for professional correspondence, filing, and internal document transport.

Advantages

The transparent material makes document contents immediately visible without opening the envelope, simplifying sorting and identification. The envelope’s dimensions match standard C5 documents and folded A4 sheets, ensuring a neat fit. Durable construction resists tearing under normal handling and the paper flap provides a writable surface for notes or shipping details. The pack quantity of 25 offers a practical supply for office use without excess storage burden.

Suitable for

• Mailing and presenting C5 documents, brochures, and folded A4 sheets
• Internal document distribution and filing in offices
• Organizing and protecting invoices, certificates, and reports
• Situations where quick visual identification of contents is required

Key specifications

• Format: C5 (162 x 229 mm)
• Material: transparent film body with paper flap
• Pack quantity: 25 envelopes
• Weight: 100 g (pack weight indicated by manufacturer)
• Closure: open top with paper flap

How to use

Insert C5 documents or folded A4 sheets into the envelope so that edges sit flush with the envelope opening. Use the paper flap to write recipient or content information if needed. For mailing, secure the flap according to postal service requirements or use an appropriate adhesive if dispatching by post. For storage, stack envelopes flat in filing trays or folders to maintain document condition and to avoid creasing.

Recommendations

Store envelopes in a dry, cool place away from direct sunlight to preserve transparency and material integrity. Avoid overfilling beyond the envelope capacity to prevent tearing and to keep contents visible and secure.