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What is an ISO Shipping Container?
All ISO containers are designed and built in strict accordance with the specifications set down by the International Standards Organisation, to ensure these containers can safely withstand the rigours of global transport by road, rail and sea. Without this regimentation, container transportation would not only be chaotic but potentially unsafe. Therefore it is essential that any shipping container used for international shipping holds certification to show it is up to standard. This certification is known as a CSC (Container Safety Convention) plate, which you can think of as a container MOT, or passport to travel. However, many ISO containers end up being sold off by shipping lines to be used as storage containers. Due to the nature of their travel these metal boxes are incredibly strong, watertight and theft-proof, which is why they make the ideal storage container.
Buying an ISO container
Containers Direct have both
new and
used ISO containers for sale. If you require a container for shipping then we will ensure the container is certified with a CSC plate. Your choice of ISO containers includes:
If you are using an ISO container for storage then your choices are much wider and can include a whole range of modifications designed to make storage simpler and bespoke to your requirements. Modifications can include anything from cutting down to size, new storage-style doors to ply lining and wood cladding.
Non ISO containers
Once a shipping container has undergone modification it's no longer suitable for shipping, but will make a great storage container. Cutting containers down to different sizes is the most common modification. Here at Containers Direct we specialise in providing cut down containers of all sizes, with
four door choices to complete your container, including keeping the original ISO doors. For storage many of our clients opt for S1 or S3 doors, which are made from flat steel panels, which makes them easier to handle than ISO doors. ISO doors are made from corrugated steel, which can rather heavy and have a rubber seal around them to prevent water ingress. We can add rubber seals to our flat panel doors, to give you the best of both. Doors can also be positioned in the side of the container, or extra doors added.
Other container modifications and conversions
As well as modifications for storage we carry out container conversions work for a wide range of applications, including offices, chemical stores and garages. See some our most common modifications below, or go to our shipping container conversions page for examples of our conversion work.
Request a Quick Quote!
Contact our sales team for your no-obligation quote, including delivery!
Testimonials
As a long established and reputable shipping container company, we want to instil confidence in our customers that we can deliver on our promises, and provide high quality products and service.
But don't just take our word for it, see for yourself what our past and present clients have to say about Containers Direct.
"Whole process extremely good, Hannah was very helpful and gave rapid responses. Dave the lorry delivery man was really excellent, extremely helpful."
Mark Nixon
10th December 2025
order - a 4m Flat Pack Store
"Our delivery was great and a big thank you to the wonderful delivery driver who was excellent at getting the lorry onto site and delivering the container quickly, efficiently and with a sense of humour! We will be needing another smaller container shortly and will be back in touch with you."
West Byfleet Infant School
28th November 2025
order - a New 'Once-Used' 40ft Container
"The purchase of the flat pack container was very easy from start to delivery."
Tom Passmore
27th Novemeber 2025
order - a 3m Flat Pack Store Container
"From start to finish Neil was excellent; his advice and patience were first class, returning all calls and contacting us when promised. This resulted in us getting exactly what we required, even down to cutting the lead time to suit our schedule. Many thanks to Neil and all the other staff members we dealt with, who were polite and helpful at all times."
A J Roofing Limited
20th November 2025
order - a Used 10ft Container
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Committed to Quality
We are ISOQAR Approved and certified to ISO 9001:2015 Quality Management Systems, demonstrating our commitment to excellence. We are also members of MakeUK, who champion British manufacturing, and the Container Self Storage and Traders Association (CSTA), representing global operators and innovators. In addition, we are registered members of JOSCAR, the Joint Supply Chain Accreditation Register.
