Valley Outdoor Supply

DRY-CON X Vent Kit for Superior Moisture Management and Condensation Control

$167.00 USD

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Shipping calculated at checkout.

Ventilation Kits - 4 Options to choose from Kit 1 (1 Exhaust + 1 Intake) Kit 2 (2 Exhaust + 2 Intake) Kit 3 (1 Exhaust + 1 Intake) Kit 4 (2 Exhaust + 2 Intake)

Required for DRY-CON kit orders

You must choose the correct Vent Scenario before adding this kit to cart. Match the direction your container doors face with the direction the wind usually comes from.

Choose Your Vent Scenario Here

Need help choosing a kit? Call 360-916-8312 before ordering.

Shipping: Flat fee shipping of $28 will be added at checkout.

Vent Scenario *Required*

Choose the option that matches the direction your container doors face and the direction the wind usually comes from.

Product description — version: 2026-05-27_v9.2.1 CLEAN FIX

DRY-CON X® Shipping Container Ventilation System | Condensation and Moisture Control

25-year manufacturer-backed product warranty · jump to Kit Finder

What it is: a passive shipping container ventilation system that pairs a container exhaust vent with a matched intake vent to create continuous airflow for container moisture prevention and container mold prevention.

How it works: as air passes over the exhaust vent, a natural vacuum is created that pulls fresh ambient air in through the intake. This produces multiple daily air exchanges with no power and no moving parts, designed to help reduce condensation, mold, corrosion, and inside rain.

Buy DRY-CON X with Confidence from Valley Outdoor Supply

If moisture, condensation, or container rain is already causing problems, DRY-CON X is a one-time passive upgrade designed to help protect your container and stored contents long term.

Flat-rate $28 shipping on DRY-CON kit orders
Help choosing the correct kit before you order
25-year manufacturer-backed product warranty
No electricity, no moving parts, no ongoing power cost

Scroll or tap a section below

Quick Jump (tap one)

Kit Finder

Answer two questions to find Kit 1 through Kit 4

Kit selection

Kit 1 through Kit 4 and what is included

Main install video

Watch the primary selection and installation walkthrough

Vent placement guide

Moisture control and fume extraction

Resources

Extra videos, PDFs, warranty, and support

Condensation explained

Why it happens and what DRY-CON X does

Quick summary

Passive shipping container ventilation — no electricity, no fan, and no moving parts

Helps reduce container rain and moisture buildup — designed to fight condensation, rust and corrosion, and mold

One-time passive upgrade — helps protect stored contents from repeated moisture problems

New installations should use the complete kit section — choose the correct kit based on container size and vent scenario

Individual items are also available separately for certain retrofit or replacement needs

Find the right kit now. Use this section to choose the correct DRY-CON X kit for your container location.

DRY-CON X® Kit Finder

Required for DRY-CON kit orders. Choose your container size and vent scenario to identify the correct kit before ordering.

Important ordering note
New installations should use the complete kit selection process. Choose your container size, then choose the scenario that matches your door direction and prevailing wind.

Important note
If you have any obstructions within 3 feet of side or back walls, contact us for customized placement guidance before you cut.

Need help choosing before you order? Watch the quick selection video or contact us before you buy so you can order the correct kit with confidence.

Container size

Vent scenario

Email for help

View recommended kit

Tip: Scenarios A through H determine whether you need the Back Wall Intake kit path or the Side Wall Intake kit path. Scenario I sends you to help.

DRY-CON X® kit selection guide (20 ft and 40 ft shipping containers)

New installations should use the complete kit section. Choose your container size, then select the vent scenario that matches your door direction and prevailing wind.

For easiest ordering: Kit 1 = 20 ft Back Wall, Kit 2 = 40 ft Back Wall, Kit 3 = 20 ft Side Wall, Kit 4 = 40 ft Side Wall.

Kit 1 and Kit 2 follow the Back Wall Intake path.

Kit 3 and Kit 4 follow the Side Wall Intake path and include the adapter component listed in the kit contents.

Need help? If your site has obstructions within 3 feet of the side or back walls, contact us before cutting.

Tap here to view Kit 1 through Kit 4 descriptions

Kit 1 — 20 ft (Back Wall Intake)

Includes

1 exhaust vent
1 back wall intake vent

Scenario match: use for 20 ft containers in scenarios A, C, E, and G.

What it means: this is the 20 ft Back Wall Intake kit selected when the vent placement form points you to Kit 1.

Buy Kit 1

Kit 2 — 40 ft (Back Wall Intake)

Includes

2 exhaust vents
2 back wall intake vents

Scenario match: use for 40 ft or high cube containers in scenarios A, C, E, and G.

What it means: this is the 40 ft Back Wall Intake kit selected when the vent placement form points you to Kit 2.

Buy Kit 2

Kit 3 — 20 ft (Side Wall Intake)

Includes

1 exhaust vent
1 side-wall intake vent
1 adapter plate

Scenario match: use for 20 ft containers in scenarios B, D, F, and H.

What it means: this is the 20 ft Side Wall Intake kit selected when the vent placement form points you to Kit 3.

Buy Kit 3

Kit 4 — 40 ft (Side Wall Intake)

Includes

2 exhaust vents
2 side-wall intake vents
2 adapter plates

Scenario match: use for 40 ft or high cube containers in scenarios B, D, F, and H.

What it means: this is the 40 ft Side Wall Intake kit selected when the vent placement form points you to Kit 4.

Buy Kit 4

Ready to order the right kit?

DRY-CON X kits are available for standard new installations, with support to help you choose the correct setup before purchase.

Flat-rate $28 shipping, 25-year manufacturer-backed product warranty, and no ongoing power cost.

Need help before you order? Call 360-916-8312

Watch Before You Buy or Cut

This DRY-CON X walkthrough covers kit selection and installation so you can order with confidence and avoid mistakes before cutting into your container.

Shipping container vent placement guide (moisture control and fume extraction)

Goal 1: Moisture control and condensation reduction

DRY-CON X moisture control vent placement diagram showing high exhaust vent and low intake vent

Higher exhaust helps remove warm, moist air. Keep a clear path from intake to exhaust for best airflow.

Goal 2: Fume extraction and vapor removal

Shipping container fume extraction vent placement diagram showing low exhaust vent and higher intake vent

Lower exhaust may be used for heavier vapors. Follow material-specific guidance and verify placement before cutting.

Blue arrow = Intake air

Orange arrow = Moisture airflow

Purple arrow = Fume and vapor airflow

Caution
Follow the DRY-CON X placement guide before cutting. Verify cutout sizes, adapter orientation, and sealing method using the installation documents provided on this page.

See the downloadable installation resources below before you cut or install.

Why shipping containers get condensation (and how DRY-CON X® reduces it)

Steel shipping containers can trap warm, humid air. When outside temperatures drop, interior steel surfaces can cool below the dew point and moisture can form on ceilings and walls. Over time, this can contribute to corrosion, mold growth, and damage to stored materials.

DRY-CON X is designed to promote continuous passive airflow. Venturi-based aerodynamics at the exhaust vent encourage stale, moisture-laden air to exit while fresh ambient air is drawn in through the intake. By increasing natural air exchange without mechanical assistance, DRY-CON X helps reduce moisture buildup and the conditions that lead to condensation.

Key design features

No power required — passive airflow with no moving parts
Wall-mounted ventilation — avoids roof penetrations and reduces leak risk compared to roof-mounted turbine vents
Durable construction — designed for long service life with minimal maintenance

Installation resources and support documents

FAQ

Why are there two completely different looking vents on a shipping container?

One vent is the exhaust (patented) and the other is the intake. The exhaust is the driving force that generates airflow and pulls stale air out. The intake lets fresh air enter to replace the air the exhaust is pulling out. The manufacturer designed both vents to work together for shipping container installation without DIY modifications to the vents themselves.

Why not use just any vent like a louvered design for the intake?

The manufacturer states louvered vents can allow wind blow-in from common angles, which can bring airborne material inside (ash, pollen, dust, snow, fumes). Their hooded and screened intake is designed to help keep weather and critters out while greatly reducing pollution entry. They also note universal louver fits can leave gaps on different container wall profiles and can be difficult to seal properly.

Why does the manufacturer discourage mounting the intake at floor level?

The manufacturer feels the air is cleaner higher off the ground. As an intake, it can draw in car or lawn mower fumes, and even sparks from nearby equipment. They also cite higher moisture near grass, puddles, snow, and debris buildup close to the ground.

Why are the vents made of polycarbonate plastic?

The manufacturer states the patented exhaust shape is extremely precise and must remain as designed or airflow performance is compromised. Polycarbonate resists dents and deformation better than metal and can recover its shape after impacts. They also note that in near-ocean environments, electrolysis is possible with an aluminum vent attached to a steel container.

How do you suggest venting a container with petroleum products inside?

The manufacturer describes two approaches depending on the goal. For fumes, place an exhaust low at one end with an intake high at the other end. If heat is also a concern, they describe using one exhaust low and another high near the ceiling at the same end. Placement depends on the stored material and site conditions, so verify guidance before cutting.

What causes shipping container condensation (inside rain)?

Warm air holds more moisture than cold air. As warm interior air rises and contacts a cold metal ceiling, condensation can form. Daily temperature swings can increase condensation risk. The manufacturer notes an insulated ceiling can help because it reduces the cold surface that drives condensation.

Is there a downside to using the double-sided tape for installation?

The manufacturer states the industrial-grade tape was selected for this application and tested across climates and conditions. They report no tape failures or sealing issues as of October 2024 when installed correctly. Follow the manufacturer installation steps for surface prep, positioning, and sealing.

Where do I confirm final placement before cutting?

Use the manufacturer placement guidance and installation manual for approved locations and orientation before cutting any openings.

Which documents should I download first?

Start with the Installation Manual, then review Cutouts and Adapter Details, then confirm placement guidance before you mark and cut.

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