
Crash lock’s peel-and-seal covers its seam. The other seams are a separate question. This page stays with double wall boxes, next to postal tubes.
Packaging Boxes keeps Double wall boxes apart from a larger single wall box. The range is also the removal board. It is listed apart from single wall.
What this collects
Double wall is the stronger board, made in the UK, for heavy, fragile or stacked goods.
postal tubes is the neighbour on this list. A postal tube takes a roll without crushing it into a square. It is still a different range from double wall boxes.
Before the order goes in
Choose double wall for the weight or the stack, then the size. Do not choose it only because it sounds safer for a light item.
At Packaging Boxes, Double wall boxes does not change the cutoff. Orders by 3pm leave the same day. Under £50 ex VAT the delivery is still available. It is just not the free threshold.