Envelope C3 328x458 brown with tear-off strip

C3 Envelope 328x458 mm with Peel and Seal Strip – Security for Large Formats

Product: C3 Format Shipping Envelope
Features: 100 g/m² paper, HK strip closure

When sending large format documents, drawings, or artwork, standard envelopes are often not enough. The C3 Envelope is a specialized solution designed for those who need maximum space and reliability. Our team tested this kraft paper envelope and evaluated its practical features.

1. Durable Material and Protection

The envelopes are made from high-quality 100 g/m² kraft paper. This density ensures that the envelope will be resistant to tearing during transport:

• Kraft Paper Benefits: This material features high mechanical strength, making the envelope suitable even for heavier shipments.
• Opacity: The paper is dense enough to ensure content confidentiality – it is practically impossible to read document text through it.

2. Ergonomic HK Closure

This model features a peel and seal strip (HK). This is the most convenient and hygienic way to seal an envelope:

• Speed: Simply peel off the protective strip and press the flap – no need for moistening or using additional adhesive tape.
• Durability: The adhesive layer under the strip remains active for a long time, making the envelopes suitable for long-term storage.

3. Capacity and Format

The C3 format (328x458 mm) is designed to hold A3 size sheets (297x420 mm) without folding them. This is critical for architects, engineers, and designers sending blueprints or posters.

Technical Summary

• Format: C3 (32.8 x 45.8 cm).
• Paper weight: 100 g/m².
• Closure type: HK (Peel and Seal).
• Window: No window.
• Color: Brown (Kraft).
• Quantity in pack: 250 units.

Verdict

The C3 Envelope with a peel-and-seal strip is an indispensable tool for logistics centers, design offices, and e-shops. It is an economical yet highly reliable choice when large documents need to be sent unfolded.

Frequently Asked Questions (FAQ)

Will an A3 folder fit in this envelope?

While the envelope is larger than an A3 sheet, it will only fit thin folders or document sleeves. For thick ring binders, we recommend choosing envelopes with gusseted sides.

Does the adhesive hold firmly in cold weather?

Yes, HK-type adhesives provide good adhesion at various temperatures, though it is recommended to seal the envelopes at room temperature for the best results.