Portable Storage Containers Built for Long-Term Use

Own secure, configurable storage and create a consistent deployment plan for one location or an entire portfolio.

When storage needs continue beyond a short project, repeated rentals can become difficult to justify and harder to manage.

Monthly payments may continue long after the original need begins. Container availability may change between locations. Sizes, locks, finishes, and delivery arrangements may vary with every new order. For procurement and operations teams, those differences can make a straightforward storage requirement increasingly complicated.

We provide portable storage containers for businesses that want greater control over how storage is purchased, configured, delivered, and used.

Our flat-pack steel containers support commercial storage requirements across the United States, Canada, and Puerto Rico. With seven standard lengths and a range of practical accessories, we can help you create a secure storage solution for a single facility or establish consistent specifications across multiple sites.

Storage Units

Our core flat pack storage unit lineup is available in 7 sizes from 3.5′ to 19′. All units feature a 7.5′ width, galvanized steel construction, and a powder-coated finish for secure, standardized commercial storage.

3.5' x 7.5'

1m x 2.29m

Our most compact storage solution, perfect for tight spaces while providing superior protection and reliability.

Residential, Small spaces

5' x 7.5'

1.5m x 2.29m

Compact yet spacious container engineered for durability, versatility, and long-lasting performance.

Residential, Small business

7' x 7.5'

2m x 2.29m

Popular residential size offering excellent storage capacity with a manageable footprint.

Residential, HOA communities

10' x 7.5'

3m x 2.29m

Versatile mid-size unit that balances capacity with footprint. Perfect for contractors and job sites.

Contractors, Job sites

13' x 7.5'

4m x 2.29m

Extended capacity unit offering more space while maintaining easy transport. Great for equipment dealers.

Equipment dealers, Retail

16' x 7.5’.

5m x 2.29m

Large capacity storage for demanding applications. Ideal for industrial operations and property management.

Industrial, Property management

19' x 7.5’.

6m x 2.29m

Our largest single-compartment storage unit, providing maximum capacity for commercial and industrial needs.

Industrial, Large-scale storage

Move Beyond Repeated Container Rentals

Rental containers can make sense when the need is brief and the end date is clear. They may be less suitable when storage remains in place for months, returns with every project, or becomes a permanent requirement across several locations. A useful comparison goes beyond the advertised monthly rate.

Delivery, relocation, pickup, availability, contract terms, and repeated setup costs can all affect the total expense. Multi-site teams may also spend additional time sourcing different containers each time a location requests more space.

Owning your portable containers gives you more control over:

  • Container size and configuration
  • Locking and access requirements
  • Interior organization
  • Exterior finish
  • Placement planning
  • Future reuse
  • Multi-location consistency
Flat pack storage container supporting scheduled operations at an active Nashville venue.

Ownership is not automatically the right answer for every project. We help you consider how long the storage will be needed, how often the requirement is likely to return, and whether the containers can support other locations or future projects.

When the need is ongoing, repeatable, or spread across several sites, an owned container system can provide a clearer path forward.

Create a Storage Asset You Can Keep Using

An owned container can remain at one facility, move to another site, support seasonal requirements, or become part of a repeatable operations program.

Instead of arranging a new rental whenever space becomes limited, your team can work from an approved set of container sizes, accessories, and security features.

Compare Ownership Options
Secure, Organized Storage

Protect Equipment, Materials, and Inventory

Outdoor storage needs to do more than add square footage. It must help protect the items your team relies on.

Tools, maintenance supplies, fixtures, parts, inventory, records, and project materials may need to remain close to the work while being protected from unauthorized access and changing site conditions.

Our core storage units use galvanized steel construction with a powder-coated finish. We also offer configuration options that can support security, organization, airflow, and routine access.

Flatbox Solutions steel portable storage container for secure outdoor equipment, materials, and inventory storage
Security and practical access

Available options may include:

  • Locking systems
  • Interior shelving
  • Exterior shelving
  • Pipe racks
  • Flooring
  • Lighting
  • Ventilation
  • Insulation
  • Anti-condensation protection

The right setup depends on what you plan to store and how your team will use the container.

A facilities department may need shelving for maintenance supplies and controlled access for approved staff. A contractor may prioritize space for tools, equipment, and long materials. A property operator may need matching locks, colors, and layouts across several locations.

We help you think beyond the empty container so the finished unit supports day-to-day use.

Storage planning

Combine Security With Practical Organization

A strong lock is important, but secure storage also depends on how the interior is arranged.

When equipment is crowded near the doors or materials are stacked without a clear system, access can become slower and items may be more difficult to monitor. Shelving, racks, and planned access paths help your team use the available space more effectively.

Consistent lock specifications can also simplify access control when several sites use the same container program.

Talk with us about the materials you need to store, the people who need access, and the accessories that may support your operation.

Discuss Your Storage Requirements
Choose the Right Portable Container Size

The correct container should provide enough usable capacity without occupying more site space than necessary.

We offer seven standard storage-unit lengths:

Our core units use a standard width of 7.5 feet, allowing you to select different lengths while maintaining a more consistent product platform.

Smaller units may work well for tools, supplies, replacement parts, or locations with limited space. Mid-size units can support maintenance teams, contractors, retail operations, and general facility storage. Longer units provide more room for equipment, materials, inventory, or organized multi-department use.

We can help you consider:

  • What needs to be stored
  • How frequently items will be accessed
  • Required aisle or working space
  • Shelving and rack placement
  • Available site footprint
  • Door clearance
  • Future capacity needs

Standardize More Than One Size

A multi-site storage program does not always require one container size for every location.

You may choose a compact specification for smaller branches, a mid-size unit for routine facility use, and a larger format for distribution centers or project locations. Each approved size can still use consistent locks, finishes, accessories, and ordering requirements.

This approach gives local teams an appropriate amount of storage while helping procurement maintain control over the overall program.

Share what you need to store and the space available at each location. We will help you narrow the options.

Plan Delivery and Placement Before Ordering

A portable storage container must fit the site as well as the storage requirement.

Delivery routes, receiving areas, ground conditions, overhead clearance, vehicle movement, door operation, drainage, and emergency access should all be reviewed before the final order is placed.

Our flat-pack format can reduce some of the transportation and access challenges associated with moving a fully assembled welded container. Components arrive in a compact form and can be assembled at or near the intended placement area.

This may be useful for:

  • Commercial properties with limited receiving space
  • Active construction sites
  • Service yards
  • Campuses
  • Branch locations
  • Facilities with restricted access
  • Sites where a large assembled container would be difficult to position

Flat-pack delivery still requires preparation. The placement area should be level and suitable for the loaded container. Doors need sufficient clearance. The container should not block traffic routes, drainage areas, emergency access, or routine operations.

Local approvals, anchoring requirements, and site-specific rules should also be reviewed before installation.

Prepare Every Location for a Consistent Rollout

For multi-site deployments, we recommend documenting the essential information for each location:

  • Container size and quantity
  • Selected accessories
  • Delivery address
  • Site contact
  • Receiving conditions
  • Intended placement area
  • Target delivery or setup week
  • Access restrictions
  • Assembly responsibilities

Collecting these details early helps us prepare clearer pricing and reduces avoidable changes later in the process.

Send us your locations, required sizes, quantities, accessories, and target schedule.

Create Consistent Storage Across Multiple Sites

Storage decisions often become fragmented when every branch, facility, or project solves the same problem independently.

One site may rent a large container. Another may buy a small shed. A third may continue using valuable indoor floor space. Over time, dimensions, locks, finishes, vendors, and delivery methods can become difficult to track.

We help you create a more consistent approach.

A standardized portable storage container program can establish approved sizes, finishes, locking methods, accessories, and placement requirements before the next request is made.

This can support:

  • More predictable ordering
  • Clearer budgeting
  • Consistent site preparation
  • Fewer one-off specifications
  • Easier accessory replacement
  • Simplified expansion
  • More organized rollout planning

We work with commercial teams that need storage for facilities, construction, property operations, self-storage, municipal work, industrial applications, inventory, and multi-site programs.

In addition to storage units, our available configurations include kiosk and portable office applications for operations that need more than basic storage.

 

Why Work With Us

We focus on helping you build a storage solution around the way your operation actually works. Our approach combines:

  • Seven standard container lengths
  • A consistent 7.5-foot core width
  • Galvanized steel construction
  • Powder-coated finishes
  • Configurable locking and organization options
  • Flat-pack transportation and on-site assembly
  • Single-site and multi-location planning
  • Service across the United States, Canada, and Puerto Rico

We do not expect you to choose a container based on dimensions alone.

We help you consider storage duration, security, capacity, accessories, delivery conditions, site access, and future use so you can make a more informed purchase.

Request Pricing for Portable Storage Containers

Tell us what you need to store, where the units will be placed, and when they need to be available.

For a more detailed quote, include:

  • Delivery locations
  • Number of sites
  • Preferred container sizes
  • Estimated quantities
  • Required accessories
  • Intended use
  • Target delivery or setup dates