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The Range£13.60Visit shop Storm Trading Group 50 Brown C5 Royal Mail Large Letter Postal Boxes Corrugated Mailing Boxes - Brown
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The Postal Mailing Boxes - C5 are designed for e-commerce business owners and individual sellers who require a professional, reliable shipping solution for slim items. These boxes offer the key benefit of Royal Mail Large Letter compliance, helping you minimize shipping costs, though they are limited to lightweight, flat goods due to their single-wall construction. Combining a sleek die-cut design with user-friendly assembly, they provide a polished look for documents, books, and stationery.
| Model Part Number | 1478937 |
|---|---|
| Brand | STORM TRADING GROUP |
While the box structure may accommodate thicker items, it will no longer qualify for the Royal Mail 'Large Letter' rate, which may significantly increase your shipping costs.
No, they are designed with secure tuck-in-flaps that hold the lid closed, though you may add a small piece of packing tape if you are shipping internationally or require extra security.
Yes, they are made from corrugated cardboard, which is widely recyclable in standard municipal paper recycling streams.
Ensure the flaps are folded correctly along the pre-scored lines to create a tight friction fit.
No, these boxes are designed for flat and semi-rigid items. We do not recommend them for fragile items like glass or ceramics.
Ensure the tuck-in-flap is fully inserted into the slot and that the item inside is not overfilled, which causes internal pressure on the lid.
Add a thin layer of protective paper or a sleeve around the item before placing it in the box to ensure it does not shift during transport.
To assemble, unfold the box base, place your item inside, and fold the side wings over, followed by the main lid. Ensure the primary tuck-in-flap is pressed firmly into the slot until you feel it lock into place. These boxes are compatible with all standard domestic and international postal services that recognize the C5 size category. Store the unused flat-packed boxes in a cool, dry place away from direct sunlight or heavy humidity to prevent the corrugated board from softening or losing structural integrity over time.
