brown single wall boxes
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Brown single wall boxes are cartons made from one layer of corrugated board between two outer sheets, giving a light, economical and recyclable box for goods that do not need heavy duty protection. Custom Postal Boxes supplies brown single wall boxes to UK businesses in custom sizes, with print available, low minimum order quantities and free UK delivery.
What brown single wall boxes are made from
A single wall board has one fluted layer glued between two flat sheets. The flutes act like tiny arches, giving the board stiffness and a degree of cushioning while keeping weight down, which matters when you post hundreds of parcels. The brown finish usually comes from kraft or recycled liner paper. It hides scuffs and tape marks better than white board, takes stamps, labels and print clearly and is widely accepted for recycling after use, which makes it the default choice for general packing work.
Where single wall strength is enough
Single wall boxes handle clothing, footwear, books, homeware, printed goods, toys and most boxed retail products well, provided the carton is not overloaded and the contents are not free to move. They also serve as storage and removals boxes for lighter household items. Our single wall corrugated boxes are the core product in this range, supported by cardboard postal boxes for flatter consignments.
Signs a box is overloaded
A bulging side, a base that sags when lifted and flaps that will not meet flat are clear signs the load is too heavy or too large for a single wall carton. Stacking heavy cartons on top will also crush the flutes over time. In those cases step up to a double wall grade rather than adding more tape, because tape cannot restore crushed board strength.
Sizes and postage for brown single wall boxes
Because these boxes are light, they help keep parcels inside cheaper postage bands. A small parcel with Royal Mail can be up to 45 cm by 35 cm by 16 cm and 2 kg, and a medium parcel up to 61 cm by 46 cm by 46 cm and 20 kg, as set out in the Royal Mail prices and size guidance. Choose the smallest carton that fits the goods with their wrapping, fill any gaps with paper void fill and weigh the finished parcel. Ordering a custom size for a repeat product often saves more in postage than it costs in board.
Storing and making up flat packed cartons
Cartons arrive flat, so store them dry, flat and off the floor, away from radiators and damp walls that soften board. Fold along the creases, tape the base with one strip along the join and one across it for lighter loads, then pack and tape the top the same way. Keeping two or three sizes at the bench covers most orders without slowing packing down. See our small shipping boxes for compact orders and corrugated shipping boxes for the wider range.
Print, quantities and ordering
Brown board prints well in one or two colours, and a simple logo, handling mark or returns message looks sharp against the kraft surface. Full colour print is also possible where a design needs it. To order, send your internal dimensions, typical load weight and quantity through our contact page for a quote. Pricing depends on size, material and quantity, design support is free and UK delivery is free on every order.
FAQs about brown single wall boxes
What are brown single wall boxes used for?
Brown single wall boxes are used for packing, posting and storing light to medium weight goods such as clothing, books, footwear, homeware and boxed retail products. They give economical protection for everyday orders and are also popular for lighter removals and storage jobs.
How much weight can a single wall box hold?
Capacity depends on the carton size, board grade and how evenly the load is spread, rather than one fixed figure. As a guide, single wall suits lighter loads, and heavy or dense items should move to a double wall box for stacking strength and safety.
Are brown single wall boxes recyclable?
Yes. Corrugated cardboard boxes are widely recyclable in the UK once tape and labels are removed where practical. Brown board is commonly made with recycled content, and flattening used boxes keeps recycling collections tidy and space efficient.
Can brown single wall boxes be printed?
Yes. Brown single wall boxes can be printed with your logo, brand colours, handling marks and returns information. A simple design in one or two colours is often the clearest on kraft board, and free design support checks artwork before production.
Do single wall boxes arrive flat packed?
Yes. Single wall boxes are supplied flat packed to save storage space and protect them in transit. They fold up quickly at the packing bench and are taped along the base and top joins, and minimum order quantities are low with free UK delivery.

