The job it is listed for
A box list starts from the goods. Single wall is the everyday board: strong, affordable and versatile, for a normal dispatch weight. Packaging Boxes keeps Single wall boxes as its own range so it is not picked as double wall.
The single wall range is the general cube. It is not the double wall range, and it is not a postal format by itself.
The line that is not a substitute
Double wall is the stronger board, manufactured in the UK, for heavy, valuable or fragile goods and for a stack. A bigger single wall box is not that board.
Measure the goods, then take the close size. Empty space is a fill problem you have just bought.
Bringing it in
Reorder the sizes you packed, in the quantities you packed.
On Packaging Boxes, orders that include Single wall boxes and are placed by 3pm are dispatched the same day. UK delivery is free on orders over £50 ex VAT. Stocked items can be returned within 14 days.
Open Single wall boxes when you already know this line. Bundles have a quantity. Read it before you order one bundle and expect a hundred. Packaging Boxes will still dispatch an order placed by 3pm on the same day.