Condensation & Moisture Control

Shipping / Storage / Conex Container Moisture Control

Important Notice: Our new installation process now eliminates the need for traditional methods using screws, rivets, welding or mechanical fasteners! No tools are required and installation time is reduced by about 80%. 

Installation Details: After cutting the ventilation hole, no tools, screws, or welding of any kind will be needed for installation purposes. We use only commercial-grade adhesives manufactured by 3M corporation to provide a permanent bond and built-in waterproof seal. Just scuff up the area where tape surfaces will come in contact with the container, clean up the area to remove any dirt or residue left over, peel the protective cover from the tape, apply to the metal, run a thin bead of sealant at the top, let cure, and you’re finished. It’s as simple as that! (See existing directions for vent hole cutting locations only). Step by step instructions will be included in your vent order.

360 Wall Mounted Passive Exhaust Ventilating Systems

Introducing a proven design that is so effective it can even eliminate condensation in a Conex / Storage Container.

An innovative Passive Air Exchange System that requires No Power!

Prevents Condensation in:

  • Conex / Shipping Containers
  • Crawl Spaces & Attics
  • Garden Sheds & Chemical Storage Enclosures

Planning My Container  / Conex Ventilation System



Wall Mounted


Eliminates Condensation, Extracts Fumes and Reduces Heat Build Up

Vent Options: The goal is to maximize the conditions of the container location, it’s size and how it’s positioned regarding wind direction, wind obstacles and sun / shade.  To allow for these variables we have products that fit the different walls. The “Wall Exhaust” pictured, can be installed on any of the 4 walls. Adapter plates will be required for the sides and rear.  Intake vents can also be installed on all 4 sides. You must order the correct adapter and intake to maximize the effectiveness of the winds in your particular area.

See “Vent Placement” for designing the optimum ventilation system.

  • Spend time on site to determine what end gets more wind.
  • Gusts, turbulence, unnoticeable winds and thermals will all drive the ventilation.
  • If the local wind is unpredictable with no one direction; or if the conex is often relocated, an Exhaust at each end might be required.  See “Low Winds and Air Exchange Tables.
  • Depending on the winds: 20 ft conex should do ok with 1 exhaust / 1 intake. 40 ft. 2 Exhaust /1 intake.  See above link to determine.
  • A door mount Exhaust will inhibit the doors from latching to the side walls.



Door Mounted


Intake: Regardless how many of the small stock rectangular vents (See “Stock Vents and Comparisons”) are presently on the walls, a proper intake will be required at the opposite end of the Exhaust. This will allow air to pull throughout the entire container. One intake can feed 2 Exhaust vents. If possible mount the intake on the shady side. Side walls are a different profile than rear walls, note the screen shapes on the left.

Vent Quantity: A 40 foot container needs more ventilation than a 20 footer. The formula works on how many complete air exchanges / day. See “Low Winds and Air Exchange Tables.” If multiple Exhaust vents are required they should be on the same wall, with one profile spacing between.  Intake vents must be at the opposite end, or diagonal as below. The red end-zones in the diagram below are where vents should be located. Priority: Exhaust Vents need as much wind as possible.

Please Note:  Keeping a large metal box condensation free without power is not always simple as some locations are tougher than others.  Please review “8 Steps to a Dry Container” and implement whatever is possible.

We want success for all our customers, so please review all the links listed above to ensure all the variables have been considered when designing your ventilation system and call us if you have questions.



Grain Storage in Texas!

"I can’t explain what a difference your product has made for my container. On a day like yesterday with high heat and humidity the inside of that container would normally be unbearable. Thousands of pounds of feed, a sealed container, high heat and humidity created toxic fumes that were overwhelming. Your venting system has corrected these issues and now my container is comfortable to enter even on these extreme days.

Thank you for a great product!"

Click Here for the Article on John's Ongoing Field Testing.

Yes Sir!  The (Container Storage) Vents are just what the Dr. ordered!

"I installed everything last Saturday. I took my first reading yesterday early evening. The outside temperature was 100 and RH was 67. Inside the container the temperature was 108 and the RH was 37. This morning the outside temperature is 74 and the RH is 97. Inside the container the temperature is 77 and the RH is 54.

Thank you!"
~John M, Texas

Note from 360 Products: On a 40' container, John used a wall exhaust vent on each of the 2 entry doors and a single back wall intake vent to achieve these results.


U.S. Navy

"I have no problem with you sharing our feedback, especially to fellow Naval personnel. [Y]ou'll be pleased to hear that my supervisor had a chance to see the finished product after the install I did, and he is very pleased that not only the obvious functionality of the vent (feeling the breeze, he said), but also the aesthetic look the[y] add. We are definitely satisfied with your product and would recommend it to anyone in need of such a thing."

~V. Moreno, U.S. Navy

U.S. Navy - 6 Week Follow-Up!

"The vents are doing a fantastic job and seems to be mitigating any form of moisture intrusion inside the Conex. All in all you have much to be proud about with this outstanding product and we would be happy to recommend it to anyone."

~V. Moreno, U.S. Navy

Contact Us:

Canadian Inquiries:

(250) 896-0962 PST

Email: Walt Deelman

Other Inquiries:

(503) 559-8094 PST

Email: Bob Cravens

(812) 798-0787 EST

Email: Greg Cravens