Choosing the right shipping container is a bigger decision than most people realize. Whether you’re storing gear, building a workshop, or planning a cabin or workspace, the size of your container affects everything—from delivery and placement to layout, storage capacity, and long-term use.
The two most common options—20ft containers and 40ft containers—each bring advantages depending on your property, your needs, and your plans for the future. In Alaska, where terrain, weather, and access can complicate even simple projects, picking the right size is even more important.
This guide breaks down the differences in a way that makes sense for real Alaskans: landowners, homesteaders, commercial crews, and anyone needing tough, dependable storage or build-ready space.
If you’re torn between a 20ft or a 40ft unit, this comparison will help you make the right call—and avoid buying something that doesn’t fit your setup.
Understanding Standard Container Sizes
Shipping containers were originally built for cargo transport, which means their dimensions follow strict global standards. This consistency makes them ideal for construction, storage, and remote use—the size you choose will fit exactly the way you expect it to.
Here’s a quick breakdown of the two primary sizes:
20ft Containers
- Approx. 20’ long
- 8’ wide
- 8.5’ tall
- Compact, sturdy, and easy to move
40ft Containers
- Approx. 40’ long
- Same width and height
- Twice the storage capacity of a 20ft unit
But for most people in Alaska, the core question is simple: 20ft or 40ft?
When a 20ft Shipping Container Is the Better Choice
Not every property—or project—can handle a 40ft container. That’s why the 20ft model remains the most popular size for remote and rural areas.
Easier Delivery and Placement
A 20ft container can get into tighter spaces, navigate tougher angles, and sit comfortably on uneven ground where a bigger unit simply won’t fit. If your property has narrow access roads, trees, slopes, or limited room to maneuver, a 20ft container is the safer choice.
Ideal for Remote Properties
Hauling a 20ft container into the backcountry is dramatically easier. They weigh less, require less clearance, and are easier to reposition later.
Perfect for Moderate Storage
Many Alaskans use 20ft containers for:
- Snow machine and ATV storage
- Tools and equipment
- Hunting and fishing gear
- Firewood or seasonal supplies
Lighter and Easier to Move Later
A 20ft unit can be moved by more types of equipment. If you think you’ll want to reposition your container later, this is a big advantage.
Curious about 20ft options?
Ask Alaska Custom Containers about availability and delivery for your property.
When a 40ft Shipping Container Is the Better Choice
If you have the room and want maximum space for the cost, a 40ft container delivers unbeatable value.
More Storage for Less Money
A 40ft container offers double the space of a 20ft container—but the price difference isn’t double. You get a much better cost per square foot, which matters if storage capacity is your main goal.
Best for Large-Scale Storage
Great for:
- Construction materials
- Bulk equipment
- Commercial supplies
- Large tools and vehicles
- Property expansion
Many businesses prefer 40ft containers simply because they hold so much while still being secure and weather-tight.
Ideal for Bigger Builds
If you’re thinking about converting a container into:
- A workshop
- A multi-room cabin
- A commercial office
- A bunkhouse
- A hybrid storage/living space
…the 40ft option gives you room to design comfortably.
Delivery Needs Thoughtful Planning
A 40ft unit needs a clear, level space and enough room for a truck to back up, tilt, and drop the container safely. If your lot is tight or heavily sloped, your delivery team may recommend a 20ft instead.
Need maximum space?
Contact Alaska Custom Containers for a pricing and delivery quote for 40ft units.
What to Consider Before Choosing a Size
Before you pick a container, think through these real-world factors:
Your Property Layout
Can a long trailer safely back into your space?
Do you have enough room to tilt and unload a 40ft container?
Are there trees, buildings, or slopes in the way?
If the access is tight, a 20ft is the smarter choice.
How You’ll Use the Container
Ask yourself:
- Is this for gear storage or building supplies?
- Do you want a workshop or a cabin?
- Will you eventually want to connect multiple containers?
Your long-term plan matters.
Terrain and Ground Conditions
Soft ground, steep slopes, or unpredictable winter access can all influence the size you should choose. In some conditions, a 40ft container simply won’t reach your build site safely.
Future Expansion
If you may add a second container later, think about layout.
Two 20ft units create different possibilities than one 40ft.
Budget & Value
A 40ft container usually gives you the best value per square foot, but delivery might cost more.
A 20ft might cost less upfront and be easier to move.
Mobility
Do you want the flexibility to relocate your container?
If so, a 20ft will save time, money, and hassle.
Examples of When Each Size Makes Sense
These aren’t specific customer case studies, but they’re the kinds of situations we see all the time when helping people decide between 20ft and 40ft containers:
A Remote Landowner
A property with narrow, uneven access usually calls for a 20ft container. A 40ft unit can be too long to maneuver safely.
A Commercial Crew
A job site often benefits from a 40ft container because it offers plenty of room for tools, supplies, and even a small work office.
A Homesteader
Someone planning a small off-grid cabin might choose two 40ft High Cubes to create a roomy layout with more height and interior options.
A Hunter With Winter Gear
A 20ft container is often the sweet spot for storing a snow machine, fuel, and outdoor equipment without needing a large footprint.
Scenarios like these make one thing clear: there’s no universal “best” container size—just the best fit for your land and your plans.
Which Size Is Right for You?
Here’s the quick version:
Choose a 20ft container if you:
- Have limited property access
- Plan to move it later
- Need moderate storage
- Want an easier delivery experience
Choose a 40ft container if you:
- Want the most space for your money
- Are storing large equipment or bulk materials
- Are planning a cabin, office, or workshop
- Have a wide, stable spot for delivery
Both sizes are strong, secure, and built to stand up to Alaska’s weather—the right size just depends on your property and purpose.
The Right Container Starts With the Right Size
Picking the right shipping container isn’t complicated once you know what each size offers. Whether you’re outfitting a job site, storing gear, or building something custom, choosing the right length sets the entire project up for success.
If you’re unsure about access, delivery, terrain, or layout, the team at Alaska Custom Containers is always ready to help.
👉 Request a quote and find out which container size works best for your land, your project, and your long-term plans.
