Tjernlund V1D UnderAire Crawlspace Ventilator Fan, 110 CFM for Moisture & Mold Reduction

Power Ventilate Musty, Damp Crawl Spaces

Enhance Fresh Air in Your Crawl Space
Our innovative exhaust fan ventilates musty, damp crawl spaces easily and effectively. This high-performance solution significantly improves air quality in your crawl space, reducing mustiness and dampness.

Easy Installation Through Existing Passive Vents
Designed to fit seamlessly through existing passive vents, this fan requires no additional installation or modifications. This makes it simple for DIY enthusiasts to tackle the job without professional installation costs.

Standard Block Foundation Compatibility
This faceplate is sized specifically for ventilation openings through standard block foundations. Its precise fit ensures optimal airflow and efficient operation in environments typical of most homes.

110 CFM, 20 Watt, Maintenance-Free Operation
With a capacity of 110 cubic feet per minute (CFM) and consuming only 20 watts of power, our fan operates quietly and efficiently. The maintenance-free design means you can enjoy consistent performance year-round without the need for routine upkeep.

Adjustable Dehumidistat and Freeze Protection Limit
Equipped with an adjustable dehumidistat, you can precisely control the humidity levels in your crawl space. Additionally, the freeze protection limit prevents the fan from operating below freezing, ensuring safe and reliable operation in various weather conditions.

6-Foot Grounded Power Cord for Convenience
The included 6-foot grounded power cord provides ample flexibility for positioning the fan where it’s most effective. Its grounded design ensures safe and reliable power usage.

Trimmable Faceplate for Custom Fit
Our faceplate can be easily trimmed to match non-standard foundation openings, providing a customized solution that fits your specific crawl space layout perfectly.

By using this power ventilator, you can transform your musty, damp crawl space into a dry, fresh, and healthy environment.