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  • Cardboard postal boxes with a brown outer and inner
  • Quick to assemble with branding on the INSIDE FLAPS - not visible when constructed (except ecommerce styles) *
  • We offer 4 styles: tuck-in flaps, fold-in-flaps (recycled material on outside), peel-&-seal and ecommerce
  • Manufactured from corrugated single wall cardboard
  • Saves storage space - all sizes are delivered flat-packed
* Please note size 180x120x30 has a visible logo

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Brown Postal Boxes

With the rise in ecommerce business and companies looking for more presentable solutions than mailing bags or standard cardboard boxes, Kite’s brown postal box is the ideal mailing box for ensuring both durability and professional presentation. This simple yet effective design is very popular and would also benefit from our custom printed logo tape, great for brand recognition and ensuring goods are secure.

Perfect when needing to send a variety of items in a professional box, our brown postal boxes are made from high quality single wall cardboard material. Available in four styles: tuck-in-flaps, fold-in-flaps, ecommerce and peel-&-seal, see ‘images’ and ‘more info’ for style specification. View the product table for exact dimensions or use the search bar to find the brown box closest to your required dimensions. 

All our tuck-in-flaps brown postal boxes have branding on the inside flaps, not visible when constructed. They can be used in conjunction with bubble wrap and void fill to secure products inside, or coloured tissue paper for a more presentable solution if you are using our brown postal boxes as gift boxes for letterbox style gifts. Our peel-&-seal postal boxes feature a secure sticky seal as well as a tear open strip.

Our ecommerce boxes can be assembled within seconds thanks to their crash-lock-base and integrated peel-&-seal strip. Follow the links to learn more about our ecommerce boxes and large letter postal boxes. Click here to view more postal boxes. 

Lightweight but sturdy, these boxes are great for keeping costs down. All styles of box have a huge range of uses and have proven an extremely popular choice for e-commerce, mailing and fulfilment companies. All sizes in this range are delivered flat-packed, minimising the amount of space required to store them and making them easier to handle. These boxes have a smooth matte kraft finish. 

These one-piece cartons are quickly and easily assembled. For a more presentable solution, see our range of white postal boxes.

All our brown postal boxes adhere to Royal Mail's Pricing in Proportion. To find out if your chosen size of brown postal boxes falls under Royal Mail’s letter, large letter, small parcel, medium parcel or large parcel categories, please refer to our Royal Mail PiP Guide.

We offer volume discounts when buying in bulk, with free delivery on online orders over £45. Learn more about our delivery here

Are brown postal boxes made from FSC approved sources?

Yes, our brown postal boxes are made from responsibly sourced materials with the Forest Stewardship Council’s stamp of approval.

Are these brown boxes biodegradable?

Yes, our brown postal boxes are biodegradable.

Are brown boxes recyclable or made with recycled materials?

Our cardboard boxes are made from recycled materials, the percentage of which ranges from 60% to 90%. This cardboard is one of the most easily recycled resources in the UK and can be recycled kerbside by customers.

Seal with one of our paper tapes and fill with environmental void fill for the perfect plastic-free packaging. These single walled boxes are kind to the planet and vegan friendly. 

Need more help? We’ve got you. Get in touch with us at 02476 420065 and a member of our friendly team will be happy to help.

Looking for more delivery boxes or packaging boxes? Click here

Video: Brown cardboard postal boxes
How to construct each style of our brown postal boxes

Our tuck-in-flaps and fold-in-flaps postal boxes. Tuck in flaps feature branding on the inside of the box (not visible when constructed). Simply fold and secure, once your product is in the box, the top flaps slot in on the outside. Delivered flat packed, these boxes can be deconstructed and stored to save space. Our plain fold in flaps boxes are to be made with the recycled material on the outside. Simply fold and secure, the top and side flaps fold inside the box. This style can also be deconstructed and stored.

Video: Ecommerce boxes
See our demonstration video on our quick and easy ecommerce boxes

Our 100% recyclable ecommerce boxes are the perfect solution for a wide range of industries. With their crash lock base, these boxes popup in seconds making the whole packing process quicker and more efficient. Once items are inside the box, simply fold the outer flaps inward and secure with their integrated peel-&-seal strip. They also feature a tear open strip so the receiver can easily access contents. Ecommerce boxes can be deconstructed back down for flat packed storage.