Large letter boxes

• Extra flat postal box made of 100% recycled paper
• Especially suitable for shipping flat products
• Economical and versatile packaging solution

From: £0.14 Regular Price £0.14
In stock
Only %1 left
101 x 101 x 19 mm - CLL001
160 x 110 x 19 mm - CLL002
217 x 108 x 19 mm - CLL003
225 x 160 x 19 mm - CLL004
320 x 230 x 19 mm - CLL005
* Request your bespoke size or request a quote for a larger quantity
Amount: 1 units
Free delivery over £100 *
Price per unit:
per unit
total: ex. VAT total: inc. VAT
  • Cut-off time 3 pm
  • Free delivery over £150 *
  • 30 Days Returns

* Please refer to our delivery policy page. For any queries please contact us.


SKU Dimensions
(Length x Width x Height)
Pallet Quantity Bundle
CLL001 101x101x19mm 13500 50
CLL002 160x110x19mm 9000 50
CLL003 217x108x19mm 9000 50
CLL004 225x160x19mm 6750 50
CLL005 320x230x19mm 3000 50

These large letter postal boxes are specially designed for delivery with the Royal Mail, with external dimensions that attract some of the cheapest postage rates available on the market. As they fit in standard domestic mail slots, both you and your customer save on delivery costs due to the parcel sizes.

With a sturdy design and tuck-in flaps on all sizes, you can be sure that the contents of your delivery will be kept safe and secure from bending and crushing. They are ideal for sending larger documents, books, items of clothing, catalogues and various other smaller and lighter objects.

Recommended for

  • These letter boxes are highly versatile, making them ideal for ecommerce and logistics. They are perfect for sending documents and relatively small and light objects that require some interior protective stuffing to ensure safe delivery.

Key Features


While these boxes are great value for money, they are also specially designed to reduce postage costs, representing a double saving for you and your customers. They are easily reusable for any returns, making the entire purchase process as streamlined as possible.

Suitable for letterboxes

The perfect size for delivery in standard mail slots in British houses, ensuring your items will be properly delivered through the door whether the customer is at home or not. This makes the delivery process as easy as possible for the customer and minimises lost parcels and all the paperwork this can create, saving you time and money.


These sturdy boxes are very versatile and are an ideal way to deliver documents and books, or small objects in a specifically sized and protective parcel. The fact they are boxes with corners (and not simply flat envelopes) offers a bit more protection from any rough treatment during delivery.


The boxes are completely recyclable and biodegradable, making them a green alternative to plastic pouches and bubble wrap and ensuring your customer knows you are an environmentally responsible company.

Are you interested in ordering larger quantities?

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How to measure a box?

When measuring a cardboard box, it is important to consider three key dimensions: length, width and height. These measurements provide the internal dimensions of the carton, allowing you to define the space available to pack products and ensure they fit properly.

The dimensions provided on our website are in Millimetres and are following the order LENGTH x WIDTH X HEIGHT.

To measure correctly a cardboard box follow these instructions:

1. Length: start by measuring the longest side of the box base

2. Width: rotate the box 90 degres and measured the other side of the box base

3. Height:measure the distance from the base to the top

How to easily assemble your Large Letter Boxes?



What makes ePack sustainabile?

In today's society, sustainability has become a key focus. Consumers who are conscious about the environment are demanding eco-friendly packaging solutions. DS Smith ePack offers packaging solutions that are 100% eco-friendly, using fibres from responsible sources to combat deforestation. They use recycled or virgin paper from a certified chain of custody, and their corrugated cardboard packaging is both recyclable and biodegradable.

DS Smith ePack prioritizes sustainability by using responsible sources, recycled or virgin paper, and recyclable and biodegradable materials. Consumers consider sustainability as a crucial factor in their purchasing decisions, and non-sustainable packaging can lead to negative consequences for companies. Eco-friendly packaging not only benefits the environment but also improves brand image and reduces the carbon footprint.

What does FSC label means?

FSC (Forest Stewardship Council) labelled paper is an important choice for individuals and businesses looking to prioritize sustainability and responsible forest management. Using FSC labeled paper offers numerous benefits. It supports responsible forest management, reduces environmental impacts, promotes social responsibility, meets consumer demand for sustainable products, and ensures compliance with regulations and standards. By choosing FSC labeled paper, individuals and businesses can make a positive impact on the environment and contribute to a more sustainable future.

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