Durable. Versatile. Secure.

Maximize Your Self Storage Facility

Fully custom relocatable unit.

Flexible, movable storage solution.

Assembles in 30 minutes or less.

About Boxwell Relocatable Self-Storage Units

The ultimate convenience for businesses looking to add rental units, fast.
Boxwell relocatables are flexible, moveable buildings designed to fit almost anywhere.

Optimize unit mix, customize colors, and much more. Units are made-to-order and shipped flat-packed to your self-storage facility. 
Assembly is fast and easy, requiring 30 minutes or less per unit. Once built, Boxwell relocatables will last for decades.




One 160 sq. ft. rentable unit or two 80 sqft units (if divided)

20' x 8' x 8'

Door Opening: 5.5' W x 6' H

Tare: 3,300 lbs


One 160 sq. ft. rentable unit

20' x 8' x 8'

Door Opening: 5.5' W x 6' H

Tare: 3,300 lbs


Two 80 sq. ft. rentable units

20' x 8' x 8'

Door Openings: 5.5' W x 6' H

Tare: 3,500 lbs


Four 40 sq. ft. rentable units

20' x 8' x 8'

Door Openings: 4' W x 6' H

Tare: 4,000 lbs

Durable, Versatile, and Secure 8x20 Relocatable Self Storage Units

Improve your storage solutions with our portable storage containers

Our 8x20 storage containers take your self-storage facility to the next level. Our customer reviews show Boxwell's solid and rust-resistant galvanized steel containers are the perfect solution for your storage needs.

Shipping container storage units built for any weather condition

When finding the perfect storage space, our portable storage containers are just what you need. Our storage containers are weather resistant and provide a safe place for your belongings. Whether you need a storage unit with hinged doors for easy access or a specific width, we have the ideal solution for your storage needs.

Features of Our Portable Storage Containers

  • Various widths available to meet your storage needs
  • Shipping container construction for maximum durability
  • Designed to withstand harsh weather conditions
  • Multiple door configurations, including double doors for easy access
  • Customizable options for your storage needs

Privacy policy and pricing information

Our privacy policy ensures that your personal information remains confidential when you choose our mobile storage container services. We understand the importance of maintaining your privacy and take all necessary measures to protect your information. In addition, our competitive pricing structure offers you the best value for your storage needs. Request a quote today and discover how we can help you maximize your storage space with our customizable options.

Additional space for your storage needs

Whether you need extra space for personal or business purposes, our relocatable self-storage units offer a practical solution. Choose from various sizes and configurations to find the perfect solution for your belongings. Our portable storage containers can be easily expanded or reconfigured as your needs change. So you'll always have the right amount of storage space available.

Frequently asked questions about building storage units

Q: How do I determine the appropriate width for my mobile storage container?

A: The width of your storage container will depend on the items you want to store and the space you need. Consider the size of your items and the space available at your location to determine the most appropriate width for your portable storage container.

Q: What are the advantages of using a shipping container as a portable storage unit?

A: Shipping containers are designed to withstand harsh weather conditions and provide a secure, durable storage space. They are also easily customizable, allowing you to create the ideal storage solution.

Q: How can I protect my items in bad weather?

A: Our portable storage containers are built to withstand extreme weather conditions, keeping your belongings safe and secure. Additionally, you should use weather-resistant packing materials and properly secure your items inside the container to minimize potential damage.

Q: What is the pricing structure for your portable storage containers?

A: Our prices are competitive and vary depending on the size and configuration of your chosen storage unit. Contact us for a quote and more information about our pricing options.

Q: Can I add hinged doors to my portable storage container?

A: Yes, we offer customizable door configurations, including double doors, to give you easy access to your belongings.

Q: How can I protect my privacy using your storage services?

A: Our Privacy Policy describes the steps we take to protect your personal information when you use our storage services. We are committed to protecting your privacy and ensuring the confidentiality of your information.

Build storage units tailored to your needs

Our relocatable self-storage units are designed to meet your specific storage needs. We have the perfect solution if you need a portable storage container with a specific width, double doors for easy access, or a weatherproof unit. With our customizable options and competitive pricing, you can confidently build storage units that meet your needs and maximize your storage space. Contact us today to request a quote and discover the benefits of our high-quality, versatile portable storage containers.

Dimensions & Weights

234″ L x 96″ W x 96″ H
Door Opening(s): 68″ W x 72″ H
Weight: 3,300 lbs

234″ L x 96″ W x 96″ H
Door Opening: 68″ W x 72″ H
Weight: 3,300 lbs

234″ L x 96″ W x 96″ H
Door Openings: 68″ W x 72″ H
Weight: 3,500 lbs

234″ L x 96″ W x 96″ H
Door Openings: 48″ W x 72″ H
Weight: 4,000 lbs


Need a specific size? Just ask! Our units are fully custom and made to order (max: 20′ long).


  • 10,000 lbs on base
  • 120 mph wind resistant, 60 psf snow load on roof
  • Easy to build – 24 total nuts and bolts
  • Stackable three-high, fully loaded
  • Fork pockets for easy moving, even when loaded
  • Water, wind, dust, and pest-proof


  • Anti-condensation spray on ceiling absorbs moisture
  • Two wall vents promote proper air flow
  • Can be subdivided into smaller units with removable partitions
  • Safety and packing stickers included

Services & Warranties

  • Site layouts – ensure your land is optimized
  • Choose the best colors with unit mockups and renderings
  • On-site unload/install assistance upon delivery of first order
  • White glove install service available (subject to additional fees)
  • One year warranty – workmanship, materials, and defects
  • Five year warranty – paint
  • Seven year warranty – 3M® vinyl decals

Steel Construction

  • Highest grade and best quality steel, SPA-H and SPA-C
  • All hardware is stainless steel and will not rust
  • Roof is made of single piece of steel – will not sag or rust
  • Corrugated roof mitigates water pooling
  • “Shoe box” style roof overhang prevents water from running down walls


  • Roll up or swing doors available
  • Roll up doors come pre-assembled and lubricated
  • Wide variety of lock assemblies, including smart locks
  • Roll up doors are ADA compliant
  • Match existing buildings – choose from a wide range of colors


  • Serial Numbers: 3M brand vinyl decals, 2 on each corner guard (8 total)
  • Logos/Artwork: 3M brand vinyl decal on 3 sides – 7 year warranty
  • Graphic design available


  • 19 mm marine grade plywood
  • Triple sealed with non-slip, non-odorous coating
  • Floor is raised off the ground to allow proper drainage
  • Light or dark finish available
  • Diamond plate upgrade available



Blog Posts

About Self-Storage

Boxwell, building community, strong community in the office, positive company culture, customers, partners, employee satisfaction, storage industry, self-storage, portable storage

Building Community In and Out of the Office

Building community from the inside out can benefit your business. Not only does it have a profound impact on your employees’ well-being and job satisfaction, but it can also strengthen your business’s resilience and success in challenging economic environments.

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Boxwell, best self-storage trade shows, SSA Spring Conference and Trade Show 2024, Self Storage Association, network, industry professionals, educational sessions, vendor exhibits, Boxwell is built for your success, relocatable storage, portable storage, partners, storage facility, ISS World Expo 2024, workshops, innovation, customized storage units, SSAA Australasia Conference 2024, panel discussions, storage manufacturers, Self Storage Association of Australasia, FEDESSA European Self Storage Conference, Self-Storage Hawai'i UnConference, open discussions, NPSA Annual Conference and Trade Show 2024, National Portable Storage Association

The Best Self-Storage Trade Shows 2024

Whether you’re a self-storage facility owner, manager, investor, storage unit manufacturer, or just someone interested in the latest industry trends, attending trade shows can be a great way to stay informed, network with industry professionals, and discover new products and services.

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Boxwell, 2023 SSA Fall Conference and Trade Show, Self Storage Association, networking, roundtable discussions, self-storage industry, storage units, storage manufacturers, storage facility owners, storage facility operators, trade show

2023 Self Storage Association Conference and Trade Show

It’s conference time! Boxwell heads out to the 2023 Self Storage Association Fall Conference and Trade Show. Industry professionals, storage facility owners, operators, investors, suppliers, and other stakeholders come together, share insights, learn about the latest trends and network with one another.

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Portable and Self-Storage, Boxwell blog, portable storage, self-storage, hybrid storage model

When Portable and Self-Storage Combine Forces

With evolving customer needs and the rise and fall of the economy, we have seen a lot of changes in the storage industry over the years. Storage manufacturers have needed to adapt to fit today’s market. Read on to see how a hybrid storage model offers convenience, economy, and innovation.

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