20' Standard vs. 20' High Cube: Which Container Is Right for You?
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When most people start shopping for a shipping container, they get pricing for a 20-foot standard height unit. It's the most common container on the planet — easy to find, easy to price, and easy to deliver. But spend a few minutes browsing and you'll probably come across something called a high cube (HC). Same length, same width, but with an extra foot of overhead space.
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Here's the thing: that one extra foot of height changes more than you'd expect. Depending on what you're trying to do with your container, it could make all the difference — or it might not matter at all. Let's break it down.
It's All About the Height
The length and width are identical on both units — 20 feet long, 8 feet wide. The only difference is the height:
• 20' Standard: 8' 6" exterior height, roughly 7' 10" of interior clearance
• 20' High Cube: 9' 6" exterior height, roughly 8' 10" of interior clearance
That extra foot adds up to more than 100 additional cubic feet of usable space inside. The standard height container gives you about 1,172 cubic feet total. The high cube bumps that to around 1,310. For storage, that gap might not feel huge. For a conversion project, it's a game changer.
Why Are 20' High Cubes So Hard to Find?
If you've noticed that 20' high cubes are harder to come by than their 40-foot counterparts, you're not imagining it. There's a real reason for that.
Shipping lines love 40-foot high cubes because they maximize volume for lighter cargo. The 20-foot container, on the other hand, is typically used for heavy, dense freight like machinery, stone, or industrial equipment — the kind of cargo that hits weight limits before it ever fills up the vertical space. So that extra foot of height? It's rarely needed in commercial shipping.
Because shipping lines don't order them in bulk, manufacturers only produce 20' high cubes in small batches. That keeps supply tight and makes them a true specialty item on the used market. In fact, almost every 20' high cube you'll find are new (one-trip) units, because used ones rarely make it into circulation.
When the High Cube Is Worth It
Even with the limited availability, there are some projects where the 20' high cube is clearly the better choice.
You're building a workspace or living space. Once you factor in flooring, insulation, and ceiling panels, a standard container can start to feel tight. The high cube lets you maintain a full 8-foot finished ceiling, which makes a real difference whether you're building a home office, a workshop, or a studio.
You need to store tall equipment. Certain tractors, industrial shelving units, or stacked pallets might clear a standard container's ceiling by just a few inches, or not at all. The high cube solves that problem without forcing you to step up to a 40-footer when you don't need (or have room for) the addition length.
Ventilation matters. In warm climates, that extra vertical space helps heat rise away from your stored items. It also gives you more room to route ductwork or install HVAC without eating into your floor space.
When a Standard Height Container is the Smarter Call
For most people, the 20' standard height container is still the best solution — and here's why.
It's easier to find and easier to afford. Because 20' high cubes are a specialty item, they almost always carry a higher price tag and a longer lead time. We typically have plenty of 20' standards ready to go. A new (one-trip) 20' high cube might take more time for us to acquire.
It fits where the high cube won't. If your site has a low-clearance roof, an overhead structure, or local height restrictions, that extra foot can become a real problem. The 8' 6" profile of a standard container is much easier to work with in tight spaces.
Accessories are built for it. Shelving systems, interior door kits, racks — most container accessories are designed for the standard 8' 6" height. Outfitting a standard unit is straightforward. Finding the right fit for a high cube can take extra legwork.
Quick Comparison
| 20' Standard | 20' High Cube | |
|---|---|---|
| Exterior Height | 8' 6" | 9' 6" |
| Interior Height | 7' 10" | 8' 10" |
| Interior Volume | ~1,172 cu ft | ~1,310 cu ft |
| Availability | High (New and Used) | Low (Mostly New) |
| Best For | General storage, heavy items, tight budgets | Offices, workshops, tall equipment |
So, Which One Should You Buy?
If you need a dependable, cost-effective storage solution and want it delivered quickly, the 20' standard height container is what you're looking for.
If you're converting a container into a living space, workspace, or need that extra clearance for tall equipment, the 20' high cube is worth the premium price.
Not sure which one fits your project? USA Containers can help you figure out exactly what you need and tell you what we have available to ship to your site today.
🇺🇸 Click here for an automated shipping container quote from USA Containers