Die-cut Royal Mail Large Letter box with internal dimensions of 350 × 245 × 20mm, supplied in packs of 50.

Manufactured from high-quality E-flute (1.5mm) corrugated cardboard, these boxes offer excellent strength and protection while remaining lightweight and easy to assemble.

Ideal for storage, postage, or retail display, this box is perfectly suited for mailing small items and fits comfortably within the Royal Mail Large Letter size limit of 353 × 250 × 25mm, helping to reduce postage costs.

Produced using recycled materials, all of our cardboard boxes are manufactured in-house at our Market Weighton factory. If this size does not meet your requirements, please contact us to discuss our bespoke packaging service. Whether for postage, packaging, or storage, we can manufacture a custom box tailored to your needs.