ATMOX Internal Fan – 145 CFM – Joist Mount

Item: 01-360-100

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ATMOX Crawl Space Drying Fan – 145 CFM – Joist Mount

These joist-mounted fans have a very unique design and application to control moisture in all areas of a crawl space. Additionally, the fans are easy to install and are very quiet when running. The fans work well for both vented and encapsulated crawl spaces.

The fans mount directly to a floor joist. They increase air flow and circulation in areas that wouldn’t otherwise get ventilation from exhaust or intake fans. The fans are great for use in spaces with internal walls or home additions which have hard-to-reach areas. Remember that you want to remove crawl space moisture from every area of the crawl space not just some of it. This gets dry air to a “dead area” or “dead corner” of the crawl space.

In larger crawl spaces, a dehumidifier may also have difficulty drying out far corners away from the dehumidifier. These internal fans can be used with a dehumidifier to assist air movement in your crawl space to the dehumidifier to improve the drying reach. You don’t want to dry out the area near the dehumidifier but neglect the other parts.


These fans are one component of the ATMOX System. The system uses an ATMOX controllerfans and/or dehumidifier for the actual drying or moisture control. However, the ATMOX setup is not just fans and/or a drying unit. The ATMOX System is a smart solution using the  ATMOX ACE Controller, the brain of the system, to determine the best operation to improve conditions within your crawl space. It does this through analysis of the combination of dew point, temperature, and humidity. Therefore, the components will run only at optimal times. The system is focused not only on removing excess moisture but also on air quality and energy efficiency.

Powering Fans

With the ATMOX controls, a low voltage 12V DC wire gets power to the fans. This means that the setup of all components (not including a dehumidifier) will run from one electrical outlet. This allows for a simple installation, and it minimizes or eliminates the need for an electrician at the installation.

An AC Adapter powers these fans in a standard outlet. In this setup, the crawl space fans will run continuously.

Assembled in USA from domestic and foreign parts. Includes 3-year limited product warranty.


  • Output: 145 CFM
  • Nominal: 0.7A at 12V DC
  • Usage: Measured at 10 W
  • Noise: 34dB
  • Mounting: Use U-Bracket to mount to internal joist
  • Power: Use with supplied fan connector cable and quick splice connectors to connect to low voltage 12V DC wire to power from ATMOX controller. For use with standard electrical outlet, use AC Adapter (sold separately).

Spec Sheet – Internal Fan – 145 CFM – Joist Mount