ISO Shipping Containers for Sale
ISO shipping containers are built to the international standards that let them stack, lock, and travel by ship, rail, and truck. That means corner castings, standard footprints, and corrugated Corten steel. We stock standard and high cube ISO units from 20ft to 53ft, delivered for a flat $500 anywhere in the US.
Used (Cargo Worthy)
40′ High Cube Shipping Container – Watertight & Airtight Storage Solution
$1,750$2,200
ISO Shipping Containers Built to Standard
An ISO container is one manufactured to International Organization for Standardization specs, which is why a box loaded in Shanghai stacks perfectly on a ship and locks onto a chassis in Ohio. Those shared dimensions and the twistlock corner castings are what make intermodal shipping work, and they're the same features that make these containers so useful on the ground. When you buy ISO, you're buying a known, repeatable quantity: a box that handles, stacks, and seals exactly the way the next one will.
What Makes a Container ISO-Spec
- Standard footprints: 20ft and 40ft external lengths at 8ft wide, so they handle and stack predictably worldwide.
- Corner castings: the cast steel blocks at all eight corners for lifting, stacking, and securing with twistlocks.
- Corten steel: weathering steel that resists corrosion in marine and outdoor conditions.
- Cam-locking doors: heavy steel doors with multiple locking bars and weather gaskets.
- Standard vs high cube height: 8'6" standard or 9'6" high cube for the extra foot of clearance.
Heights are where buyers should pay attention. A standard ISO box stands 8'6" tall; an ISO high cube reaches 9'6". That extra foot is the difference between a snug fit and easy clearance for tall pallets, racking, or a future office conversion. The footprint stays the same either way, so a high cube costs you nothing in floor space. A 20ft ISO unit gives roughly 1,170 cubic feet, and a 40ft about 2,390. Prices in this category run from $1,300 to $15,500 across 20ft, 40ft, 45ft, and 53ft units, in both new one-trip and used cargo-worthy grades.
Because they're built to one global standard, ISO containers also play well together. You can buy a 20ft now and a matching 40ft later knowing they'll line up, stack, and lock the same way. That consistency matters for fleets, depots, and anyone planning a multi-box layout. It's also why these units hold their resale value: a buyer anywhere knows exactly what an ISO 20ft or 40ft is without inspecting an unusual one-off design. For most storage, shipping, and conversion jobs, an ISO-spec box is the safe, proven choice.
Standard or High Cube?
If headroom matters, browse the high cube containers; for the classic 8'6" build, see standard shipping containers. Compare exact ISO measurements on the container dimensions page before you commit, since interior space sits slightly under the external figures. Every ISO unit ships in stock with our 30-day return policy and flat $500 delivery on a tilt-bed truck.
Frequently Asked Questions
What does ISO mean on a shipping container?
ISO refers to the International Organization for Standardization. An ISO container is built to globally agreed dimensions and fittings, including corner castings and standard footprints, so it can move interchangeably by ship, rail, and truck.
Are all your containers ISO containers?
Most standard 20ft and 40ft shipping boxes are ISO-spec. Some specialty and heavily modified units fall outside ISO dimensions. This category groups the standards-compliant intermodal containers from 20ft to 53ft.
What's the difference between standard and high cube ISO containers?
Both share the same 8ft width and footprint, but a standard ISO box is 8'6" tall while a high cube is 9'6", giving an extra foot of interior height. See our high cube range for the taller option.
Can ISO containers be stacked?
Yes. The corner castings let them stack and lock together with twistlocks, which is how they're carried on ships. On site, stacking should be done by a qualified operator on level, load-rated ground.
How are ISO containers delivered?
On a tilt-bed truck that sets the container on your prepared site, for a flat $500 to any US state. Allow clear straight access; a 40ft unit needs roughly 60-70 feet of approach.