People searching for a “con x box” usually mean a conex box, which is a steel shipping or storage container. The name comes from the CONEX boxes the US military used for moving supplies, and it stuck as a general term. Queen Container sells these steel boxes in new and used condition, so here is what to know before buying one.
What a con x box really is
A con x box is a rugged, stackable steel container built to carry freight across ships, trains and trucks. Today most are standard intermodal containers rather than the original military design, but people still call them conex boxes, connex boxes or simply storage containers. They are weatherproof when in good condition, hard to break into, and easy to place on level ground.
Common sizes
| Size | Approximate inside volume | Common use |
|---|---|---|
| 10 ft | Compact | Tight yards, tools |
| 20 ft | About 1,170 cu ft | Home and business storage |
| 40 ft | About 2,390 cu ft | Inventory, equipment |
| 40 ft high cube | About 2,700 cu ft | Tall loads, conversions |
A 20 ft box weighs about 5,000 lb empty, and a 40 ft about 8,000 lb, so you need proper delivery equipment rather than a regular pickup.
What a con x box is used for
The most common use is storage, whether that is household items, tools, seasonal inventory or farm supplies. Contractors use them as lockable job-site offices. Others convert them into workshops, pop-up shops, studios or even full homes. Because the steel shell is strong, it handles heavy weather and long-term use when it is maintained.
What does one cost?
Prices depend on size, condition and location. As typical ranges, used 20 ft units run about $1,500 to $4,000 and used 40 ft units about $2,500 to $5,500. New or one-trip 20 ft containers often run $3,500 to $6,500, and 40 ft versions $5,000 to $9,000. Delivery is separate and commonly costs $150 to $500 locally and $1,000 or more over long distances.
These are general market figures, not a quote. For exact pricing, ask the seller for a written estimate that includes delivery.
Choosing the right one
Many buyers forget to measure the space for doors. Allow room to swing them fully open, and leave a walking gap between the box and any fence or wall so you can reach every side for maintenance.
Start with how much you need to store, then check your site. For many homeowners, the 20 ft double door container is a solid all-purpose choice. If space is tight, a 10 ft storage container may fit better. Ask for the grade, either cargo-worthy or wind-and-watertight, and for photos of the interior.
Where to buy and what to check
You can buy from dealers, yards, depots or private sellers. Dealers usually offer the simplest process because they grade the container, quote delivery and handle paperwork. Before paying, check the roof for pooling or rust, the floor for soft spots, and the door seals for cracks. Ask whether the box is cargo-worthy or wind-and-watertight, and confirm the container number in writing.
Next steps
Decide on a size, confirm your delivery access, and request a quote. You can browse our storage container category and then send your questions through the contact page. When you are ready to compare options, start at our home page and look at shipping containers for sale.
