Die-cut Royal Mail Large Letter box with internal dimensions of 225 x 125 x 15mm, supplied in packs of 50.

This size is approximately one-third of A4, making it ideal for folded letters, stationery, and similar flat items.

Manufactured from high-quality E-flute (1.5mm) corrugated cardboard, these boxes provide excellent strength while remaining lightweight.

Suitable for storage, postage, or retail display, this box fits comfortably within the Royal Mail Large Letter size limit of 350 x 250 x 25mm, making it ideal for mailing small items cost-effectively.

Made from recycled materials, all of our cardboard boxes are manufactured in-house at our Market Weighton factory. If this size is not quite right for your needs, please get in touch to discuss our bespoke packaging service. Whether for postage, packaging, or storage, we can manufacture a custom solution tailored specifically to you.