brown mailing boxes

brown mailing boxes are corrugated cardboard boxes with a natural brown kraft finish, made for posting products safely while keeping a simple, honest look. Custom Postal Boxes, a project of Vertex Packaging based in Wolverhampton, supplies brown mailing boxes custom printed for UK businesses, manufactured in house with low minimum order quantities. Free design support and free UK delivery help small and growing online sellers present every order neatly without giving up the practical strengths of kraft board.

Why sellers choose brown mailing boxes

The brown finish comes from kraft board, where the natural colour of the paper shows through instead of being bleached or coated white. That look suits brands that sell handmade goods, natural products, food items, refills and everyday essentials, because the packaging reads as straightforward and considered rather than glossy. Brown board is also forgiving in transit: scuffs and marks show far less on kraft than on a white surface, so the box that arrives still looks presentable.

Strength comes from the corrugated layer between the inner and outer papers. The fluted middle absorbs knocks and stacking pressure while keeping the box light, which matters because postage is charged on the finished parcel. Our kraft mailer boxes and cardboard mailer boxes pages cover the main mailer styles in this material.

Kraft board and the recycled look

Customers associate brown board with recycled content and easy recycling, and cardboard is widely accepted in UK household recycling once tape and labels are removed. Choosing a box that is the right size for the product supports that story, because an oversized box full of filler undermines the message. Right sizing also reduces the air you pay to post.

Single wall or double wall board

Single wall corrugated board suits most everyday orders such as clothing, books, cosmetics and boxed goods. Double wall board adds a second fluted layer and is the better choice for heavier, fragile or stacked shipments. If you are unsure which grade your product needs, describe the contents and their weight when you request a quote and we will recommend a sensible specification.

Sizes for brown mailing boxes and Royal Mail bands

Royal Mail charges by size band as well as weight, so the outside dimensions of the packed box decide whether an order travels as a large letter, a small parcel or a medium parcel. The large letter limit is 353mm by 250mm by 25mm and 750g, the small parcel limit is 450mm by 350mm by 160mm and 2kg, and the medium parcel limit is 610mm by 460mm by 460mm and 20kg. Checking your packed box against the Royal Mail size and weight guidance before you commit to a box size can keep every order in the band you intended.

Measuring a box the right way

Measure the product first, including any protective wrap, then add a small allowance for cushioning on all sides. Quote internal box dimensions when you order, because board thickness takes up space inside. A box that is slightly too small is as much of a problem as one that is far too large, since a bulging lid can push a parcel into a higher size band and weakens the board at the same time. For flat items, our kraft postal boxes offer a lower profile alternative.

Printing and ordering brown mailing boxes

Brown board takes print well, especially bold logos, single colour designs and messages printed inside the lid. Darker inks read clearly on kraft, and a simple one colour print often looks sharper than a busy design that fights the natural background. Many sellers print the outside for recognition on the doorstep and add a thank you message or care note inside. Pricing depends on size, material and quantity and every order is quoted individually. Ask for a quote through our contact page for brown mailing boxes and the free design support team will check your artwork fits the box shape before anything is made.

FAQs about brown mailing boxes

Are brown mailing boxes recyclable?

Yes. Brown mailing boxes are made from corrugated cardboard, which UK households can recycle widely once tape, labels and any non cardboard filler have been removed before the box goes in the recycling.

Can brown mailing boxes be printed with my logo?

Yes. Brown mailing boxes can be custom printed inside and outside. Bold designs and darker inks work especially well on kraft board, and free design support is included to help you set the artwork up correctly.

What size brown mailing box do I need?

Measure your product with its protective wrap, add a small allowance for cushioning, and check the packed size against Royal Mail size bands so the parcel stays in the postage band you planned for.

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

Single wall board has one fluted layer and suits most everyday orders. Double wall board has two fluted layers, giving more strength and crush resistance for heavier or fragile goods and for stacking.