Single Wall Adjustable Cardboard Boxes

• Cost efficient cardboard box
• Versatile single wall solution holding up to 10kg
• The adjustable boxes save you money by eliminating the need to buy multiple different-sized boxes
• The widest range of single wall cardboard boxes available in the market

From: £0.20
In stock
Only %1 left
229 x 152 x 102 - 152 mm - Multi-Depth - CSW041
305 x 229 x 100-152 mm - Multi-Depth - CSW011
305 x 229 x 79 - 229 mm - Multi-Depth - CSW042
457 x 305 x 230-305 mm - Multi-Depth - CSW020
* 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 2:30 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
CSW011 305x229x152mm 1650 40
CSW012 305x305x305mm 2100 40
CSW020 457x305x305mm 450 50

Our classic single wall boxes offer a cost-effective and no-frills packing option that is always reliable, easy to assemble and easy to unpack. While you may think it’s impossible to improve on perfection, these adjustable height boxes offer even more advantages!

These adjustable multi-depth boxes allow you to pack goods securely and simply remove the portion of the box that remains above the level of the product before finalising packing. This allows you to pack various types and quantities of goods more snugly, minimising extra space and the need for excessive packing material.

The adjustable boxes save you money by eliminating the need to buy multiple different-sized boxes, with a single box able to accommodate different delivery types, quantities and sizes. This also provides a saving on packing material and an extra level of security from shocks and bumps as you reduce the margin for the product to move around.  

Simply trim the corners of the box to the desired height and fold them tightly at the marks so that the sides fit snugly around your product.

Recommended for

  • Packing, shipping and storing parcels for a recommended maximum weight up to 10 Kg, and up to 5 Kg if sent on pallets. But this recommendation may vary depending on the nature of the product and the void fill or protective material used. It also may vary depending on the shipping method used.

  • Great for packing a range of product types and quantities, while minimising wasted space and excessive packing materials.


  • Box thickness of 3 mm with Brown cardboard recycled paper quality of 100gsm

  • All dimensions shown are internal dimensions

  • The reference CSW011 is multi-scored, helping reduce the height around 50 mm (100-152mm)

  • The reference CSW012 is multi-scored, helping reduce the height around 150 mm (150-225-305mm)

  • The reference CSW020 is multi-scored, helping reduce the height around 75 mm (230-305mm)

  • 100% recyclable corrugated board made of recycled fibers

  • Those products are not designed to be used for heavy-duty products unless stated otherwise, not to be used under high humidity or high temperatures conditions

  • All dimensions may vary by up to 3mm

Key Features

Versatile solution

The adjustable boxes offer unparalleled versatility, allowing you to minimise excess packing material, streamline your ordering process for multiple shipments with highly adaptable packing boxes, and save you and your customers money with each shipment.

Environmentally friendly

Outstanding environmental value is also an inherent feature of these boxes, as they are made of 100% recycled and recyclable material that is sturdy and durable for multiple uses and is completely biodegradable, especially when used in conjunction with our other eco-friendly packing materials and tape.

Are you interested in ordering larger quantities?

Please contact us via email at

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 Single Wall Adjustable Cardboard 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 is our Circular Design Metrics?

One of the most important principles of the circular economy is designing for circularity, which involves products and services being designed with their end-of-life in mind, making it easier to recover and regenerate materials.

DS Smith has developed a series of circular design metrics which give us an accurate picture of the degree of implementation of circular design principles in the production of our packaging solutions and provide quantifiable data to show how circular a given packaging solution is and allow quick identification of the areas of improvement required.

Our Circular Design Metrics measure Supply Chain Optimisation, Recyclability, Planet Safety, Material Utilisation, Renewable Sources, Recycled Content, the Carbon Footprint and Design for Reuse.

* This circularity information was made by using the information of an average single wall box.

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.

Postal Guide

One of the easiest ways to derive the maximum benefit from your deliveries is to use the postal option that is most closely tailored to your product and that aligns perfectly with the standards, dimensions and weights stipulated by the Royal Mail, ensuring you keep prices as low as possible for you and your customers and reducing difficulties with delays and damaged packages. This allows your business to keep the processing of orders and shipping as streamlined as possible, saving you time and money.

Letter Large letter Small parcel Medium parcel Large parcel
Maximum length 240 mm 353 mm 450 mm 610 mm > 610 mm
Maximum width 165 mm 250 mm 350 mm 460 mm > 460 mm
Maximum height 5 mm 25 mm 160 mm 460 mm > 460 mm
Maximum weight 100 g 750 g 2 kg 20 kg 30 kg

Epack offers a full range of Royal Mail-compliant envelopes and parcels for all your delivery needs, including two envelope types and three parcel types.

The letter and large letter envelopes can take weights of up to 750 grams, making them ideal for greeting cards, folded and unfolded letters, magazines and small objects such as DVDs or plastic cards. By using the standard Royal Mail dimensions, you ensure that your shipping costs as little as possible, is less likely to experience delays, and will fit standard mail slots in the UK, minimising delivery problems and the administrative burden of lost and damaged packages. The two different sizes allow you to tailor your packaging to the letter content, allowing you to minimise costs for simple document shipping with standard letters.

Royal Mail parcels come in three sizes – small, medium and large – and can accommodate items from 2 kg up to 30 kg. Whether your company specialises in clothing, electronics or games and entertainment, any potential product offered by your business will find the perfect parcel type to match and provide the necessary size and weight capacity to ensure smooth and safe delivery with adequate protective packaging.


Created by Heipifrom the Noun Project