The Complete Guide to Portable Storage Containers
Portable storage containers provide secure, accessible space for equipment, inventory, furniture, supplies, and other valuable items. Their steel construction, flexible configurations, and range of available sizes make them useful for residential, commercial, construction, agricultural, and industrial applications.
Unlike an off-site storage unit, an on-site container keeps important items close to where they are needed. A contractor can store tools near an active project, a retailer can organize excess inventory behind its facility, and a homeowner can protect furniture during remodeling.
Portable containers can also be configured for more specialized purposes. Roll-up doors, walk-in doors, shelving, electrical systems, office interiors, refrigeration, and fiberglass insulation can turn a standard container into a solution tailored to a particular operation.
This guide explains the available container sizes, common types, practical uses, selection factors, site requirements, and maintenance considerations.
What Is a Portable Storage Container?
A portable storage container is a steel unit designed to store materials, equipment, household belongings, or commercial inventory. Many units begin as ISO-style shipping containers constructed for demanding transportation environments. Once used for stationary storage, they provide an enclosed and lockable space that can be placed at a business, construction site, farm, school, or residential property.
Portable storage containers are commonly called:
- Shipping containers
- Storage containers
- Cargo containers
- Conex boxes
- Steel storage containers
- On-site storage containers
Although these terms are often used interchangeably, individual containers may differ in their condition, door configuration, size, interior features, and intended application.
What Sizes of Portable Storage Containers Are Available?
Aztec Container offers three primary sizes: 10 foot, 20 foot, and 40 foot. Each size supports different space, access, and site requirements.
| Container size | Best suited for |
| 10 foot | Small properties, tools, supplies, compact storage |
| 20 foot | Construction equipment, household contents, business inventory |
| 40 foot | Large inventory, industrial equipment and major projects |
What Types of Portable Storage Containers Are Available?
The best container type depends on what will be stored, how frequently it must be accessed, and whether the unit will serve as more than a basic storage space.
Standard Cargo Door Containers
Cargo doors open outward from one end of the container and provide a wide entry point. This traditional configuration works well for furniture, pallets, machinery, construction materials, and general inventory.
Roll-Up Door Containers
A roll-up door opens vertically, helping users access the container without allowing space for outward-swinging cargo doors. It can be useful in tighter work areas or applications requiring frequent entry.
Some larger units can be equipped with multiple roll-up doors to create separated storage areas or give different teams access to specific sections.
Walk-In Door Containers
A walk-in door offers convenient pedestrian access. It is useful when employees need to enter the container regularly without opening the larger cargo doors.
Walk-in doors are commonly selected for tool rooms, maintenance storage, offices, record storage, and inventory areas.
Full-Side-Opening Containers
A full-side-opening container provides broad access along the side of the unit. This configuration can simplify the handling of wide products, event materials, displays, machinery, and equipment that may be difficult to load through the end doors.
Refrigerated Containers
Refrigerated containers, also known as reefers, use an active refrigeration system to maintain controlled interior temperatures. They are suitable for operations that must store temperature-sensitive products and have access to the required electrical power.
Insulated Containers
Insulated containers help reduce the rate of interior temperature change. Aztec Container offers fiberglass insulation for applicable container projects. Insulation can be valuable for stored items that benefit from greater interior temperature stability.
An insulated container is not the same as a refrigerated container. Refrigeration actively cools the space, while insulation helps slow heat transfer.
Office Containers
An office container creates an enclosed workspace that can be positioned near an active operation. Depending on the configuration, it may include fiberglass insulation, finished walls, electrical connections, lighting, windows, a walk-in door, and HVAC.
Office containers are commonly used at construction sites, industrial properties, schools, events, and expanding businesses.
How Do You Maintain a Portable Storage Container?
Routine inspection can extend the useful life of a container and help identify minor issues before they become more serious.
Check the following periodically:
- Door hinges and locking bars
- Rubber door gaskets
- Foundation or support points
- Surface corrosion
- Interior moisture
- Electrical and
- HVAC equipment
- Refrigeration systems, when applicable
Keep debris away from the roof and prevent water from pooling around the base. Door hardware may also need periodic lubrication to continue operating smoothly.
Why Choose Aztec Container?
Aztec Container has provided storage container solutions. Customers can choose from 10 foot, 20 foot, and 40 foot containers for residential, commercial, construction, agricultural, and industrial uses.
Available configurations include cargo door, roll-up door, walk-in door, full-side-opening, insulated, refrigerated, office, and other custom container options.
Sales are available nationwide, while rentals are available in California. The Aztec Container team can help customers compare sizes, door types, interior features, and customization options based on the intended use and available site space.
Frequently Answered Questions (FAQs)
What is the most popular portable storage container size?
The 20 foot container is a popular choice because it provides substantial storage capacity without requiring the placement area of a 40 foot unit. It works well for construction materials, furniture, business inventory, tools, and agricultural supplies.
What can be stored in a portable storage container?
Containers can hold tools, furniture, equipment, boxed documents, retail inventory, building materials, maintenance supplies, and many other nonhazardous items. Temperature-sensitive belongings may require an insulated or refrigerated configuration.
Are portable storage containers secure?
Steel construction, lockable cargo doors, and optional lockboxes can provide a strong level of physical security. Customers should use a high-quality lock, control access to keys, and consider site lighting or surveillance for valuable equipment.
Do I need a permit to place a storage container on my property?
Permit requirements depend on the city, county, property type, placement duration, and intended use. Check with the local building or planning department and review any homeowners association or commercial property rules before placement.
What is the difference between an insulated and refrigerated container?
An insulated container uses fiberglass insulation to help slow heat transfer. A refrigerated container includes active cooling equipment designed to maintain a controlled temperature and requires a suitable electrical power source.