Conex boxes and shipping containers may look the same. Both of these storage container types are made of aluminum and standardized steel, but they do vary in function.
What is a Conex Box?
The idea for a Conex box was first revealed during the Korean War. Malcom McLean would reinvent the intermodal storage container. The military needed to find a way to transport and store supplies during the Vietnam and Korean wars.
In 1948 the
U.S. Army Transportation Corps needed to create a way to ship goods to ports
without the risk of breakage and pilferage. The Corps would develop what was
known as the “Transporter.” The “Transporter” is a type of steel container that
was able to hold 9,000 pounds, had double doors and would be mounted on skids.
rings on the corners of the container allowed for the goods to be lifted with a
spanned 8’6” L x 6’3” W x 6’10” H. Transporters were very successful, and they
would lead to the development of the Container Express, or Conex box system,
which was developed in 1952.
When the Conex was developed, it maintained two main features from the Transporter:
The size and capacity of the transporter was fine, but the Conex was made to have a modular design.
Smaller units were created that were 6’3” L x 4’3” W and 6’10.5” H. The modular design allowed for these smaller boxes to be stacked three high.
became a very popular option in the military, with the military manufacturing
over 100,000 of them by 1965 and an additional 100,000 for the Vietnam war.
containers would eventually have their size increased, with the average size
being 20’ and 40.’ However, you may find varying size containers.
Conex Storage Container Sizing
primarily in China, these containers can be shipped to ports across the world.
Large, 20-foot containers are the most common followed by 40-foot models and
the much smaller 10-foot models.
height are standard at 8’ W and 8’6” H. A rising demand for “high cubes” has
also led to a new container height of 9’6,” which is just a foot taller than
its predecessor, yet it’s still high enough for larger goods.
space is impressive, with the following interior space sizes for each
10-foot containers have a 75 sq. ft. interior space
20-foot containers have a 150 sq. ft. interior space
20-foot (High cube) containers have a 150 sq. ft. interior space
40-foot containers have a 300 sq. ft. interior space
40-foot (High cube) containers have a 300 sq. ft. interior space
ranges from 2,850 pounds for the smallest container to 8,775 for the larger
container. Door openings will be 7’8” x 7’5” for most containers, with the high
cube models having doors that are slightly larger at 7’8” x 8’5.5”.
What’s special about the Conex box is that they would go on to become ISO containers, meaning that they meet the standards of the International Standards Organization (ISO).
The ISO designation and the intermodal design allows for these containers to be transported using various transport means without loading and reloading, including:
of the Conex container, as long as they’re properly secured, will be able to be
placed on numerous types of transport without concern that the contents will
break or become damaged.
Conex Container Pricing
Pricing for Conex containers varies due to manufacturing location and how they’re sold.
There are containers that are:
One-trip containers that are used for one trip across the ocean and are slightly used with very little wear and tear
Used containers, which are shipped more than once and may have more wear and tear
less for a used Conex box, which may have been used multiple times in the past.
One-trip containers suffer the least wear and tear, so they’re often the container
type that people choose.
Conex boxes will often perform a rigorous inspection process that ensures that
the container is still up to standards and meets strict quality control
guidelines. It’s important when purchasing a Conex box to know that the seller
inspects every box for quality and structural integrity.
also be determined by other factors, including:
or those with modifications will sell for more than an older or smaller box.
Modifications can have a hefty impact in price, with some modifications
including windows, doors and climate control options.
for companies that are known for selling Conex boxes, we can across one
commonality: most companies request quotes. The quotes will allow you to
plug in the type and condition of the box that you want, and provide you with a
variety of options to choose from.
You can find some models on eBay and other sites that are selling for $4,000 – $5,000, the majority of these models have been refurbished but you can get some great deals.
If you want to ensure the integrity of the container, it’s best to purchase from a company that specializes in Conex boxes.
What are Consumers Doing With Conex Boxes?
Consumers can still use conex boxes for shipping, but in most cases, they’re using these weather tight boxes for other projects.
A few of the many projects that are ideal for Conex boxes or shipping containers are:
Homes are being built with conex boxes because of their modular design.
Schools are being built to provide extra classrooms in developing nations.
Offices are being erected at a low price point.
Workshops and storage units are great options.
Studios and art galleries are being erected.
Pools are being made.
Saunas are being installed inside of conex boxes.
seen large scale usage of shipping containers and Conex boxes for:
Nurseries and indoor gardens
design of the Conex box allows it to be used for a wide variety of structures.
Since the boxes are sealed well and durable, they’re being used for everything,
from small, emergency hospitals to nurseries and even homes.
Since the boxes are sealed tight, they allow for high energy efficiency and weatherproofing that can be difficult to obtain with a standard home. The price is also much lower than if building a traditional home. There are some potential drawbacks with insulating and HOA restrictions but with the right build, you can get a great modern home for less.
Conex boxes are modular, and this was their main difference compared to shipping containers.
When you purchase a Conex box, you can opt to use multiple containers to piece together a structure that is larger than a single shipping container and provides more overall design freedom without the need to cut or modify the container.
To be fair though, shipping containers are fairly modular as well so the difference is moot at this point.