Custom 20 x 20 x 20 Cardboard Boxes

Single Wall or Double Wall?

Board strength depends on what goes inside and how the boxes are handled, and the choice comes down to single wall or double wall corrugated board. Single wall board is light, economical and fine for soft goods, bedding and light housewares that will not be stacked too high. Double wall board is much stiffer and resists crushing when boxes are stacked several high in a warehouse or loaded tightly into a van.

As a rough guide, if a full box weighs more than about 15 kg, or will sit at the bottom of a tall stack, double wall is the safer choice. For removals, many firms keep both: single wall for linens and double wall for books, kitchenware and anything heavy.

Removals customers also reuse these boxes for loft storage, so a sturdier grade often earns goodwill long after the move is done.

• Single wall B-flute for light, bulky items
• Single wall C-flute for general use and moderate stacking
• Double wall BC-flute for heavy contents and tall stacks
• Hand holes on two sides for easier lifting

Printing on Custom 20 x 20 x 20 Cardboard Boxes

Large boxes give you a large canvas, far more than a small cardboard carton can offer. A removals company might print its logo and phone number on all four sides, so every box in a client's new home carries the name. A retailer might print a simple logo and a this way up arrow. Warehouses often print a white panel where contents and locations can be written by hand.

Direct print in one or two colours onto brown kraft is the most common and economical choice for these boxes. It is clear, quick and hard-wearing. Full colour is possible for retail use, but most buyers keep the design simple because the box is a workhorse rather than a display piece.

For removals firms, consistent boxes also look professional on moving day. A van full of matching printed cubes tells the client they hired a proper firm, and the boxes stacked in their new hallway keep your name in front of them, and their neighbours, for days afterwards.

Packing and Handling Tips

A big box filled with heavy items is a back injury waiting to happen. Keep heavy contents for smaller boxes such as our 6 x 6 x 6 inch cartons and use the 20 inch cube for lighter, bulkier items. If you must pack something heavy, put it at the bottom and fill the rest with lighter items so the weight stays low.

Seal the base with tape along the centre seam and across both edges, sometimes called an H-tape pattern, for the best strength. Hand holes make lifting easier and safer, but they weaken the side slightly, so avoid them on boxes that will carry very heavy loads at the bottom of a stack.

Write or print contents on at least two sides, and on the top if boxes will be stacked. It saves a lot of opening and closing when you are looking for one item.

Storage and Flat Delivery

Large boxes take up a lot of room when made up, so they are supplied flat and folded only when needed. A pallet of flat boxes fits in a corner of a warehouse or a garage. Removals firms often keep a stock in their vans and assemble boxes on site as each room is packed.

If you need boxes delivered to several sites, let us know when you ask for your quote. Free tracked delivery covers UK mainland addresses, usually within 2 to 3 working days.

Store flat boxes somewhere dry. Corrugated board absorbs damp from cold concrete floors, which weakens it, so keep pallets off the ground or on a raised shelf, especially in an unheated unit.

Check the Van Door and the Pallet Before You Settle on 508 mm

A 20 inch cube is close to the limit of what one person can carry through a doorway while full, so before you confirm the size, measure the narrowest door, stair turn or van opening the boxes will pass through. If the route is tight, the 508 x 508 x 300 mm low cube may suit better and still stack neatly on a pallet. Decide on hand holes at the same time: they make carrying easier but should be left out if the box will carry more than about 15 kg or sit at the bottom of a stack.

With the size settled, choose the board grade and the print. One colour on kraft suits a name and phone number on all four sides. Send those details and the quantity and a custom quote comes back by email within one working day, followed by a free design proof. Production runs 4 to 7 working days after you approve it, and the flat bundles or pallet travel on free tracked UK mainland delivery in 2 to 3 working days. If you also need cartons with built-in carry handles for lighter loads, ask for both in the same quote.