100% Recycled Contents
Plastic Free
Sustainably Sourced

(160x160x100mm) Brown Postal & Mailing Box

Product Code: MB3
Availabilty: In Stock

Our brown postal boxes are lightweight, durable and eco-friendly — they make the perfect eCommerce packaging! Featuring a hinged lid and convenient tuck-in closure, they are easy to assemble and offer quick access to products. Along with our other postal boxes and mailers, these recycled brown postal boxes provide functional and future-friendly packaging for smaller items.

From £0.44

Total Cost:
Order by 1pm Monday - Friday for next day delivery

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100% Recycled Contents
Plastic Free
Sustainably Sourced

Subscribe for 15% off your first order & new product alerts

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Parcel Tracking

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1-hour Delivery Slot

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Sustainably Sourced

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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


Brown postal boxes are the modern standard for eCommerce packaging, offering numerous advantages over plastic-based packaging.

With their die-cut design, these postal boxes feature a hinged lid and tuck-in closure for added convenience. Plus, they can be custom printed both inside and out to reinforce your brand’s identity and create a lasting impression on your customers. These features make brown or white postal boxes a blank canvas for marketing departments that allow you to create a distinct design and a memorable unboxing experience, or simply a cost-effective and eco-friendly solution for your brand.

Why Choose Our (160x160x100mm) Brown Postal Boxes 

Our brown postal boxes for the perfect “all-rounder” packaging solution. They’re eco-friendly, cost-effective, easy to assemble and help simplify the packaging and shipping process.

Brown postal boxes are perfect for mailing products that require protection during the shipping process. Made from high-quality, single-wall corrugated cardboard you can ship anything from apparel to cosmetics in a sustainable style. These corrugated boxes are made from test liner on both the inside and the outside. They’re also made from 100% recycled paper to help you achieve maximum sustainability with your packaging. Our brown packaging boxes are 100% recyclable, home-compostable and biodegradable after use, making it easy for your eco-conscious customers to dispose of responsibly.

Key Features of Our Brown Cardboard Boxes

Postal boxes are compact, durable, and feature a self-locking design for maximum security. We ship them to you flat, and as one piece of cardboard, making storage simple. They’re also quick to assemble in under 20 seconds. Their sustainable credentials mean the humble 0427 postal boxes will appeal to eco-conscious businesses and consumers looking to limit their impact on the environment.

With a fold-down hinged lid and tuck-in flaps, our brown postal boxes eliminate the need for extra packaging tape, making them extra budget-friendly. Creating a die-cut box from scratch usually requires an initial investment cost for the die-cutting tool, however, if you select die-cut postal mailing boxes from our extensive range of sizes, you won’t have these setup costs — we’ve sourced the most popular box sizes for you.

Why Eco-Friendly Brown Postal Boxes Matter

At Packaging Supplies, we are strong advocates of the circular economy, and we believe that paper packaging is a significant step towards achieving this goal. Through well-designed packaging solutions that optimise storage space and reduce transportation costs, we’ve reduced Kraft board weight without compromising strength, thereby reducing packaging waste. 

All of our boxes, including our shipping boxes, are made from recycled materials. Our paper packaging products are made from at least 80% recycled paper and 20% sustainably sourced wood from managed forests. We can also provide cardboard boxes made from 100% recycled content for total sustainability.

By selecting experienced carbon-neutral packaging suppliers like us, you can benefit from packaging solutions that not only maximise storage but also reduce transport costs. As consumers increasingly demand sustainable business practices, our service and knowledge of eco-friendly packaging are indispensable. 

Frequently Asked Questions

Here, we have compiled answers to common inquiries about our high-quality brown postal boxes. Whether you are a new customer looking for more information or an existing customer seeking clarification, we are here to provide you with all the information you need!

Brown postal boxes are immensely versatile and can be used to ship a range of products. These strong and eco-friendly boxes are ideal for packaging and shipping items such as clothing, shoes, accessories, books, electronics, home goods, small appliances, cosmetics, health and beauty products, and other similar items. 

They provide excellent protection during transit and are suitable for shipping products of various sizes and shapes. The neutral, rustic brown colour of these boxes and their smooth surface also allow for easy customisation with branding or labelling, making them a popular choice for eCommerce businesses and individuals who want sustainable packaging solutions for their shipments.

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. Get in touch with the Packaging Supplies team for a custom packaging quote in just 48 hours.

We can also create branded eCommerce boxes that don’t require any tooling or artwork set-up fees and a low minimum order quantity — order from just 50 units.

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 contact us to speak with one of our representatives today. We offer a range of Complete Packaging Services, from 30-day accounts to stock and call-off for bespoke and printed boxes, all delivered on a next-day basis.

Our 0427 postal boxes are designed to meet the specific needs of eCommerce businesses. On each page, we state which size our postal boxes are categorised in by royal mail, i.e. small or large parcels, for instance. This information is great for keeping your shipping costs to a minimum. On the other hand, our postal boxes can be custom-made with shallower depths, allowing for a maximum external depth of 25mm. This makes them eligible for classification as a large letter (not a parcel!) by Royal Mail, helping you save on overall shipping costs.

When sending goods via a courier, parcel size and measurements play a crucial role in minimising shipping costs. That’s why we always provide both external and internal dimensions of our boxes, helping you accurately determine shipping costs based on your selected packaging.

Bear in mind that while letterbox sizes may vary, the standard UK letterbox can accommodate packages with maximum external dimensions of 254mm length and 38mm height.

If you live/ your business is based in the mainland UK, we’ve got some great news for you. Delivery is FREE! With no minimum order value and we make all our deliveries between 9am – 6pm. To find out more about our delivery process to other places in the UK, fees and returns — head over to our Delivery & Returns page.

Switch to sustainable. Discover our whole range of eco-friendly postal boxes and mailers.

Deliveries by Couriers

Courier deliveries will be made between 9am – 6pm.

All deliveries must be signed for unless stated in the special instructions when placing the order.

Please open and fully check the contents of your delivery before signing to confirm receipt.

Tracking your parcels

As soon as your goods leave our premises they are tracked until they reach your door!

We partner with DPD for a reason, they offer the most in flexibility and customer service features. Once your goods are picked up from our depot, you will be notified via either the email addressed you provided or by text message on the telephone number you provide during the order process.

On the day of delivery, you will be given a 1-hour delivery slot, this means that you do not need to be in all day like other couriers. Through the DPD app or website you are able to track the route and name of your driver.

Going to be out whilst the delivery is taking place? No Problem, you can either change the delivery address or even request it be delivered to a local pick up point or store. Many stores including Halfords and Sainsburys support DPD pick-ups.

Click Here to visit the DPD website where you can enter your details. Alternatively, if you have a smart phone, you can download the DPD app from the Apple or Android Store.

Pallet Deliveries

Part-pallet or full pallet deliveries will be despatched through our pallet network or on our own vehicles.  You will be notified by email when your delivery is being despatched, but will be unable to track it online.  All pallet deliveries will be made between 8am - 6pm on the next working day.

International Deliveries

Once your order has been placed a quote for delivery will be generated and you will be contact prior to despatch to make payment.

Delivery Timescale

We aim to process and despatch orders for next business day delivery (subject to stock availability). But please allow 2-3 days for delivery.

Orders placed by 2pm Monday to Friday would normally be delivered next day (Sunday and bank holidays Excluded).  Please note pallet deliveries can only be delivered on a working day with Saturdays excluded.

In the event that the product ordered is out of stock, the customer will be contacted with an estimated delivery date.


UK Bank Holidays

Orders will not be processed during UK public bank holidays. Orders will be processed on the first working day back.

Delivery Charges to UK Mainland Destinations

We are extremely happy to announce that we offer free next day delivery to all orders delivered to UK Mainland, with no minimum order value.

Delivery Charges to Other UK Destinations

Deliveries outside of the UK Mainland, will be subjected to the following charges:

Parcel Rates to Northern Ireland

Pack 1 £5.50 per pack

Pack 2 £10.50 per pack

Parcel Rates to Scottish Highlands & Islands

Pack 1 £3 per pack

Pack 2 £6 per pack

Pallet Rates to Northern Ireland

Part Pallet £30 per part pallet

Pallet £35 per pallet

Pallet Rates to Scottish Highlands & Irelands

Part Pallet £30 per part pallet

Pallet £45 per pallet

For International deliveries, please contact us to check delivery cost before placing your order.

Returns Policy

Damaged or Defective Product Returns

If you have received damaged or defective products, we apologise in advance.  Please follow the guidelines below:

Please call us on the following number 01491 834000 or contact us via [email protected] . within 5 working days of receipt of the goods.  Refunds for damaged or defected goods can only be refunded when returned to Packaging Supplies within 10 working days of your delivery.

Packaging Supplies will arrange collection for any damaged or defective goods, however in the event that you miss your arranged collection date or time, then the return of the goods will become your responsibility.

Items must be made ready for collection with an order confirmation printed inside the parcel.

Standard No-fault Returns

Please call us on the following number 01491 834000 or contact us via [email protected] . within 5 working days of receipt of the goods.

Goods must be returned to Packaging Supplies within 10 working days from the date of your delivery.

You must obtain a collection quote from Packaging Supplies for the return of the items, which will vary in cost depending on the order quantity and size.

Items must be made ready for collection with an order confirmation printed inside the parcel.

Refunds will only be issued if all returned items are unmarked, undamaged and in a new condition with the inner packaging unopened.

Custom-made Product Returns

For damaged or defective products, please follow the advice above.

Refunds or returns for products that have been custom made or customized in any way will not be accepted unless they have been delivered damaged or defective.

Packaging Supplies will assess all custom-made return claims for damaged or defective products on a case by case basis.

Very efficient prompt service - good product and for once a company with a sense on pricing. Will use again.

Very good price, good quality and strong packaging, very good and easy no problem service, constant email updates, delivered when promised.

Brilliant fast delivery, came next day of order, always have what I need for a small upcoming business, so glad they don't make you buy too much, perfect boxes, thank you.

Great Service. Very simple ordering process. And great communication to keep updated on delivery.

Very quick delivery and boxes as described. Will order again for sure.

Easy to navigate website and package delivered next day. Product just what I needed and I would recommend this company.

Always on time and amazing service.

Really good quality my customers love them and I have most sizes now of the self seal brown boxes. I really like that Packaging Supplies is always looking to improve their sustainability too.

Service was fast and communication friendly and responsive.

Arrived quickly and in perfect condition and its great to see every part of the packaging was eco friendly. Will definitely be ordering again.

Great service, fast and exactly what they said they would do.

Fantastic customer service! I had an issue with my delivery and it was dealt with and resolved very quickly. I have used the company on numerous occasions - highly recommended for quick delivery and great products.

Completed all my requests with super fast delivery! Brilliant quality boxes too!

Quality products and fast delivery!

Quick delivery, good quality. Will use again!

Good quality product, great price and super fast free delivery!

Very good service and fast response. Product as described 5/5!

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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.