Single Wall Cardboard Boxes - 25 Pack Durable single wall cardboard boxes, 12" x 9" x 4" (305mm x 229mm x 105mm), made from 100% recyclable brown corrugated cardboard. Ideal for small items, A4 documents, and leaflets, these boxes are easy to assemble and comply with Royal Mail's small parcel guidelines. Practical and eco-friendly!.
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