double wall boxes UK

double wall boxes UK suppliers provide are corrugated boxes built with two fluted layers, giving thicker and more rigid walls for heavy, fragile or stacked goods. Choosing double wall boxes UK wide is the practical step up when a single wall carton would bow, crush at the corners or fail under other parcels.

Double wall board has two layers of fluting between three flat liners, and that extra layer is what resists compression when boxes are stacked on a pallet, in a van or in storage. Custom Postal Boxes, a project of Vertex Packaging in Wolverhampton, makes custom printed shipping boxes in house for UK businesses, with quote based ordering, low minimum quantities, free design support and free UK delivery.

When double wall boxes UK orders make sense

Reach for double wall when the contents are heavy, valuable, fragile or likely to be stacked, and when the parcel will pass through several hands before it arrives. Books, tools, ceramics, electronics, tinned goods and multi item orders all load a box in ways that light board cannot handle for long.

Stacking strength and crush resistance

Most damage in transit comes from pressure above and beside the box, not only from drops. Double wall board holds its shape under that pressure, keeping the load stable and protecting the corners that usually give way first on a lighter carton.

Why the base and tape line matter as much as the board

Even strong board fails if the base is taped poorly. Seal the centre seam fully, add tape across the flap edges for heavy loads, and keep the weight centred so one corner does not carry the whole load through the journey.

Shipping, storage and moving uses

Retailers and manufacturers use double wall boxes for courier and pallet dispatch, warehouses use them for stock that sits in racking, and removal teams use them because household goods are lifted and stacked repeatedly. Our double wall shipping boxes and heavy duty shipping boxes cover the main heavy use formats.

Choosing size and grade in double wall boxes UK ranges

Measure the contents with their wrap, choose internal dimensions with a small clearance, and keep dense goods in smaller boxes so the finished parcel stays safe to lift. A large box filled with books can become unliftable long before the board is at risk, which is the most common sizing mistake buyers make.

Board thickness and flute combinations

Double wall board is commonly around 6 mm to 7 mm thick, often combining two flute types so one layer cushions and the other adds stacking strength. Thicker board alone is not the whole answer, because liner quality and box size also decide how a carton performs. Compare cardboard shipping boxes for general use and corrugated shipping boxes where corrugated performance is the focus.

If you send by Royal Mail, the packed parcel still has to fit the band you buy, and medium parcels allow up to 61 cm by 46 cm by 46 cm and up to 20 kg on the services shown in the Royal Mail size and service guidance. Courier limits differ, so check your carrier rules for palletised or oversized loads before fixing a size.

Ordering and packing double wall boxes well

Tell the team what you pack, its weight and how it travels when you request a quote for double wall boxes, because pricing depends on size, material and quantity. Custom print is available on shipping boxes too, so handling guidance, branding and contents information can be printed where staff and customers will actually read it.

Wrap fragile items individually, fill gaps so nothing moves, place the heaviest pieces low and central, and label the box clearly. Reuse sound boxes where you can, checking corners and flaps first, because a box weakened by earlier taping and handling will not protect a heavy load a second time.

FAQs about double wall boxes

What is the difference between single wall and double wall boxes?

Single wall board has one fluted layer between two liners, while double wall board has two fluted layers between three liners. The extra layer makes double wall boxes more rigid, more crush resistant and better suited to heavy or stacked loads.

How much weight can a double wall box hold?

There is no single figure, because capacity depends on box size, board grade, how the load is spread and how the parcel is handled. Keep dense items in smaller boxes and share the exact weight when you ask for advice or a quote.

Are double wall boxes good for moving house?

Yes. They are widely used for moves because books, kitchenware and tools are heavy and boxes are stacked in vans. Use smaller double wall boxes for the heaviest rooms and larger boxes for bulky but light items such as bedding.

Can double wall boxes be printed with branding?

Yes. Shipping boxes can be custom printed with logos, handling guidance and product information. Free design support helps you place print so it stays readable and clear of tape lines and flap folds.