Arpan A3 C3 Manilla Hardback Envelopes – 457 × 324mm Board Backed, Self-Seal, Do Not Bend, Pack of 50 – General Information:

The Arpan A3 C3 Manilla Hardback Envelopes are designed to protect important documents, photos, certificates, and artwork during postage and storage. Made with a strong manilla paper exterior and a rigid board-backed insert, these envelopes prevent bending and creasing in transit.

Clearly printed with “Please Do Not Bend”, they help ensure careful handling by postal services. The self-seal adhesive strip provides fast, secure closure without the need for tape, making them ideal for high-volume mailing.

With a generous 457mm x 324mm (C3 / A3) size, these envelopes are perfect for offices, schools, photographers, artists, and businesses sending large or valuable flat items. Supplied in a pack of 50 for excellent value and convenience.

Arpan A3 C3 Manilla Hardback Envelopes – 457 × 324mm Board Backed, Self-Seal, Do Not Bend, Pack of 50 – Key Features:

• Rigid board-backed design for maximum protection

• “Please Do Not Bend” message for safe postal handling

• Strong manilla paper for durability

• Self-seal closure for quick and secure sealing

• Large A3 / C3 size for flat documents and artwork

Specifications – Key Features:

• Brand: Arpan

• Product Type: Hardback Board-Backed Envelopes

• Size: A3 / C3

• Dimensions: 457mm × 324mm

• Material: Manilla paper with rigid cardboard backing

• Closure Type: Self-Seal Adhesive Strip

• Print: “Please Do Not Bend”

• Colour: Manilla

• Pack Size: 50 Envelopes

• Usage: Documents, photos, certificates, artwork, prints