What Is a Conex Box? Complete Guide to Conex Containers 2026
What Is a Conex Box? Complete Guide to Conex Containers
What Does Conex Mean?
A Conex box is a steel shipping container originally developed by the United States military for transporting equipment and supplies. The term “Conex” comes from the words Container Express and was first used during military logistics operations.
Today, the term Conex box is commonly used to describe shipping containers, storage containers, cargo containers and ISO containers used by businesses and homeowners throughout the United States.
What Sizes Do Conex Boxes Come In?
The most common Conex box sizes include:
- 10ft Conex Box
- 20ft Conex Box
- 40ft Conex Box
- 40ft High Cube Conex Box
The 20ft Conex box is the most popular option due to its balance of storage capacity and affordability.
Common Uses for Conex Boxes
- Construction site storage
- Equipment storage
- Farm storage
- Retail inventory storage
- Mobile offices
- Workshops
- Container homes
- Emergency storage solutions
Are Conex Boxes Waterproof?
Most wind and watertight Conex boxes are designed to protect contents from rain, pests and environmental damage when properly maintained.
Conex Box vs Shipping Container
In modern usage, there is effectively no difference between a Conex box and a shipping container. Conex is simply a commonly used name for the same steel container structure.
Frequently Asked Questions
How much does a Conex box cost?
Pricing varies based on size, condition and location but most used containers start around a few thousand dollars.
Can a Conex box be modified?
Yes. Windows, doors, insulation, electrical systems and custom layouts can all be added.
Get a Quote for a Conex Box
NorCal Containers supplies new and used Conex boxes throughout California, Oregon and Nevada with delivery available to most locations.