100% Recycled Contents
Plastic Free
Sustainably Sourced
Verified Carbon Neutral

160x160x100mm Brown Postal & Mailing Box

Postal boxes are the new norm for e-Commerce packaging. With their hinged lid and tuck in closure, they are quick to make up and offer a greater presentation of your products when compared to a single or double-wall shipping box.

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100% Recycled Contents
Plastic Free
Sustainably Sourced
Verified Carbon Neutral

Technical Specifications

Product CodeMB3
Internal Dimensions160x160x100mm (L X W X H)
External Dimensions177x161x105mm (L X W X H)
Material150T/T P
Royal Mail PiPSmall Parcel
ColourBrown Kraft
End of LifeBiodegradable, Home Compostable, Recyclable
Recycled Content100%
Sealing MethodTuck in flaps

Additional Information

Postal boxes are the new norm when it comes to e-Commerce packaging. Because postal boxes are die-cut, they offer some key additional features compared to your standard single wall box, such as a hinged lid and tuck in closure. Brown postal boxes can also be printed both inside and out, perfect for reinforcing brand identity and leaving an impression. Combining all these additional features becomes any marketing departments dream, allowing for the creation of a more exciting unboxing experience!

What are die cut boxes and what's all the hype about?

Additional Features: Die cut boxes are a great solution for more complex packaging solutions or to create boxes with additional features.

This range of brown packaging boxes is a standard 0427 FEFCO style. We love the way the hinged lid opens to reveal the products inside, making for a pleasant, hassle-free unboxing experience.

These brown postal boxes have front and side flaps that tuck snugly into the box to close it – you don't need the usual masses of tape to seal it closed, but many customers opt for a custom printed sticker or tamper-proof sticker for that little added security.

Creating a die-cut box from scratch usually requires an initial investment cost for the die-cutting tool, however, if you select die-cut brown kraft boxes from our extensive range of sizes, you won't have these setup costs, because we have invested for you.

Our standard postal box range has 9 sizes and we offer them all in White or Kraft. All die-cut boxes come flat on a pallet to save on storage space. They are very quick to make up, with two very simple locking tabs on each side and the hinged lid and fold in flaps for closure.

Parcel Sizes

Many e-Commerce boxes like our single wall or double wall cardboard shipping boxes are categorised by Royal Mail as small or medium parcels, which is great for keeping your shipping costs to a minimum, however, 0427 postal boxes can be custom made to even shallower depths, such as a maximum external depth of 25mm, which is categorised as the maximum size to be classed as a large letter by Royal Mail. This makes this style of postal boxes or your brown gift boxes attractive to many e-Commerce sectors.

When it comes to sending your goods by courier, the parcel size and measurements are equally important to keep shipping costs to a minimum, which is why we always display the external box sizes alongside the internal dimensions. This will help you best determine the shipping costs for your selected packaging.

Top tip: Whilst letterbox sizes do vary, the standard UK letterbox will fit a package with the maximum external dimensions of 254mm long and 38mm high.

Custom Printed Brown Postal Boxes

Standard 0427  brown postal boxes like these are very easy to customise. For low quantities, you might want to consider a printed label or sticker to promote your brand and make your boxes tamper-evident. For quantities of 500 and over, you can get your postal boxes custom printed. Just get in touch with the Packaging Supplies team for an instant quotation.

Do you need larger volumes or regular deliveries?

If you're looking to order larger volumes than offered in our shop or wish to order by the pallet on a regular basis, please do get in touch to speak with one of our representatives today. We can offer all types of support from 30-day accounts to stock and call off for bespoke and printed boxes, all delivered on a next day basis.

Environmental Promise

Here at Packaging Supplies, we are a big believer in the circular economy. Paper packaging is the closest packaging material to hitting this goal, with an impressive 85.5% recycling rate in the EU. This is the reason that we have changed our product offering to be completely plastic-free and focus our attention on paper products which can be 100% recycled.


All of the Packaging Supplies boxes - including our brown packaging boxes - are made from recycled material. Our paper packaging products are made up of 80% recycled paper and 20% wood from sustainable forest, however, we can also provide cardboard boxes from 100% recycled content. Packaging Supplies are committed to environmental legislation.

Did you know that the corrugated industry is allowing larger companies to lower their carbon footprints regularly? On top of this through selecting experienced packaging suppliers with our expertise and experience within a large range of industries, you will benefit from packaging that will help maximise storage and reduce transport costs. As consumers push for sustainable business practices to be at the forefront of business, the service and knowledge Packaging Supplies offered is welcomed with open arms.

The corrugated industry is helping retail companies to lower their carbon footprint. It is doing this by providing well-designed packaging that maximises storage and reduces transport costs. The industry has also seen a steady reduction in board weight while keeping board strength, which in turn is reducing packaging waste. At Packaging Supplies, we have experience in many industry sectors and can assist in providing the most sustainable packaging solutions.

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If you are looking for something a little different, a unique size or printed packaging, we can produce a custom solution for you.

PS_Icon_Dark Green-09-Sustainably Sourced


PS_Icon_Dark Green-10-Eco Friendly Inks


PS_Icon_Dark Green-06-Plastic Free


PS_Icon_Dark Green-03-Recyclable


Hear From Our Customers

packaging solutions

Expert packaging suppliers for over 40 years, with an emphasis on plastic-free packaging

In the late 1970s, two friends and colleagues, Tim Allen and Stewart Middleton saw a gap in the market for a different type of packaging supplier. At the time, other businesses were selling custom made boxes and stocking packaging consumables, but Tim and Stewart wanted to offer more than that. They wanted to give their clients additional services, such as warehouse storage and the ability to have their packaging delivered as and when it was required. Packaging Supplies was established, and the rest is history.

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