Sobres C4 autoadhesivos MAILmedia 38141/0 — 90 g/m², blanco, paquete

MAILmedia C4 self-adhesive envelopes made from 90 g/m² white paper are designed to hold unfolded A4 documents, brochures or catalogs. The peel-and-seal closure enables quick and reliable sealing without additional tape or moistening. These envelopes offer a clean, professional presentation and are suitable for routine mailing, internal document transfer and administrative dispatches.

Advantages

Durable 90 g/m² paper provides increased stiffness and protection compared with standard lightweight envelopes, reducing the risk of creasing during handling. The self-adhesive peel-and-seal strip speeds up packing and ensures a consistent closure. White colour gives a neutral, professional look and accepts printing or labeling for addressing. The C4 format accommodates A4 sheets without folding, saving time and preserving document appearance.

Suitable for

• Sending A4 documents, certificates and brochures without folding
• Office correspondence and administrative mailings
• Mail-order shipments of flat printed materials and catalogs
• Internal distribution of reports, presentations and contracts

Key specifications

• Format: C4, fits A4 sheets unfolded
• Paper weight: 90 g/m²
• Colour: white
• Closure: self-adhesive peel-and-seal strip
• Intended use: mailing and document storage

How to use

Insert A4 documents flat into the C4 envelope, remove the protective strip from the adhesive and press the flap firmly to seal. For heavier contents or longer transit, press along the flap edge to ensure uniform adhesion. Addressing can be done by printing directly on the envelope or applying a label; avoid overfilling to maintain secure closure and neat appearance.

Recommendations

Store envelopes flat in a dry environment away from direct sunlight and extreme humidity to maintain the adhesive performance. For important or sensitive documents, combine the envelope with a lightweight cardboard insert for additional protection during transport. Test any automated inserting or printing equipment compatibility on a small sample before large runs.