20 Foot Conex Container for Sale: A Complete Guide
A 20 foot conex container for sale offers a practical solution for businesses, contractors, property owners, schools, and organizations that need secure storage or a customizable workspace. Its manageable footprint, durable steel construction, and versatile interior make it one of the most widely used container sizes.
Originally designed for transporting cargo, conex containers are now used for much more than shipping. A 20 foot unit can serve as an equipment storage area, construction site container, portable office, workshop, retail space, concession stand, or specialized facility. It provides useful capacity without requiring as much site space as a 40 foot container.
Before purchasing a conex container, it is important to understand its dimensions, available conditions, door configurations, features, and customization possibilities. This guide explains what buyers should consider when selecting the right container.
What Is a 20 Foot Conex Container?
A 20 foot conex container is a heavy-duty steel structure built according to standardized shipping container dimensions. The term “conex” originated from “container express,” but it is now commonly used to describe steel cargo and storage containers.
These containers typically have corrugated steel walls, reinforced corner posts, secure cargo doors, marine-grade flooring, and a steel roof. Their solid construction allows them to support many commercial, industrial, and residential applications.
A standard 20 foot container generally has the following exterior dimensions:
- Length: 20 feet
- Width: 8 feet
- Height: 8 feet 6 inches
The interior is slightly smaller because of the thickness of the walls, doors, and structural components. A standard container usually provides approximately 1,170 cubic feet of usable interior capacity, although measurements may vary slightly by manufacturer and model.
What Can a 20 Foot Conex Container Be Used For?
A standard cargo container can be used in its original form or modified for a particular function. Its modular design makes it suitable for both simple storage and more advanced conversions.
Construction Equipment Storage
Construction companies can use 20 foot containers to organize tools, safety equipment, building materials, and jobsite supplies. Shelving and interior lighting can make frequently used items easier to locate.
Commercial Inventory Storage
Retailers, manufacturers, and distributors may use conex containers for seasonal merchandise, excess inventory, packaging materials, equipment, or archived records. A container can help free up valuable space inside an existing building.
Agricultural Storage
Farms, nurseries, and agricultural businesses can use containers to store tools, irrigation components, feed supplies, maintenance equipment, and other non-perishable materials.
Residential Storage
Homeowners may choose a 20 foot container during remodeling projects, property cleanouts, or major landscaping work. It can also provide long-term space for furniture, tools, recreational equipment, and household belongings.
Portable Offices
With the right modifications, a steel container can become a functional ground-level office. Office containers may include insulation, drywall, electrical wiring, lighting, windows, a personnel door, and HVAC.
Workshops and Maintenance Areas
Workbenches, electrical outlets, lighting, storage racks, and ventilation can transform a container into a compact workshop or maintenance space.
Should You Buy a New or Used Conex Container?
Both new and used containers can be dependable options. The right condition depends on your intended application, appearance requirements, and expected service life.
New or One-Trip Containers
A new container is often called a one-trip container because it has usually completed a single cargo trip from the manufacturer. These units generally have limited exterior wear, cleaner interiors, newer flooring, and doors that operate smoothly.
A one-trip container may be a good choice when:
- Exterior appearance is important
- The container will be converted into an office
- A clean interior is needed
- You expect to use the container for many years
- The unit will be placed in a visible customer-facing area
Used Containers
Used containers have typically spent several years in cargo service. They may have dents, scratches, faded paint, surface rust, patches, or other signs of normal use. However, a carefully inspected unit can still provide reliable storage.
A used container may be suitable when:
- Appearance is less important than function
- The unit will be used for basic equipment storage
- Minor cosmetic wear is acceptable
- The container will be repainted or modified
Buyers should request clear information about the container’s condition instead of assuming that all used units offer the same quality.
Which 20 Foot Container Type Should You Choose?
Not every 20 foot container has the same layout. Choosing the correct configuration can improve access, organization, and daily usability.
Cargo Door Container
A cargo door container has standard outward-swinging doors at one end. It is a straightforward option for general storage and applications where full-width end access is sufficient.
Roll-Up Door Container
Roll-up doors can make the container easier to access in locations where there is limited space for swinging cargo doors. One or more roll-up doors may be installed depending on how the interior will be organized.
Full Side Open Container
A full side open container provides broad access along the side of the unit. It can be useful for loading oversized equipment, displaying merchandise, or creating a flexible retail setup.
Walk-In Door Container
A standard personnel door allows convenient daily entry without opening the larger cargo doors. This configuration works well for offices, workshops, maintenance areas, and frequently accessed storage.
Insulated Container
Insulation helps reduce heat transfer and manage interior temperature changes. Aztec Container offers fiberglass insulated containers for applications that need an added layer of interior protection.
Refrigerated Container
A refrigerated container includes specialized cooling equipment for temperature-sensitive storage. Buyers should confirm the required operating temperature, electrical supply, equipment condition, and maintenance needs before choosing a refrigerated unit.
Office Container
An office container is designed to provide a comfortable, functional workspace. Depending on the layout, it may include insulation, interior wall finishes, electrical outlets, lighting, windows, HVAC, and office doors.
Why Buy a 20 Foot Conex Container From Aztec Container?
Aztec Container has been a trusted provider of shipping containers. The company supplies new and used containers along with specialized and customized units for storage, office, commercial, and industrial applications.
- Available 20 foot options include cargo door containers, roll-up door containers, insulated containers, refrigerated containers, office containers, car storage containers, event containers, and full side open containers.
- Custom features can be selected according to the intended use of the unit.
Sales are available nationwide, while rentals are available in California. Customers can contact Aztec Container at to discuss container condition, configuration, availability, and customization requirements.
Frequently Asked Questions
Where can I find a 20 foot conex container for sale near me?
Aztec Container supplies 20 foot conex containers for sale nationwide. Available inventory may include new, used, cargo door, roll-up door, insulated, refrigerated, office, and customized containers. Contact the team to discuss availability for your location.
What are the dimensions of a 20 foot conex container?
A standard 20 foot conex container is approximately 20 feet long, 8 feet wide, and 8 feet 6 inches high externally. Interior measurements are slightly smaller because of the walls, doors, and structural frame.
What should I inspect before buying a used conex container?
Check the roof, walls, doors, locking rods, seals, corner posts, flooring, and interior condition. Look for holes, severe corrosion, major structural damage, strong odors, moisture, and floor deterioration. Make sure the doors open and close properly.
Can a 20 foot conex container be converted into an office?
Yes. A 20 foot container can be customized with fiberglass insulation, drywall, electrical wiring, lighting, windows, HVAC, flooring, and a walk-in door to create a functional ground-level office.
What is the difference between a cargo door and a roll-up door container?
Cargo doors are large outward-swinging doors located at the end of a container. Roll-up doors move vertically and require less clearance in front of the opening. Roll-up doors are often convenient for frequently accessed or divided storage spaces.