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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
110 CFM Power Crawl Space FanThe Tjernlund UnderAire Series V1 Crawl Space Ventilator is designed to circulate fresh outdoor air underneath homes and porches. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated
The Tjernlund UnderAire Series V1 Crawl Space Ventilator is designed to circulate fresh outdoor air underneath homes and porches. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated wood off-gassing and other odors that might migrate into living areas.- Excess moisture can cause mold, mildew and wood rot; under air fans increase air circulation to fight condensation
- Calculate the cubic area of the crawl space by multiplying the length x width x height; divide this number by 15 to determine the minimum CFM necessary to fully ventilate the space in 15 minutes
- 1-fan and small faceplate forventilation openings through brickfoundations (requires switch or dehumidistatto activate)
- 110 CFM to circulate fresh outdoor air underneath homes and porches
- Ventilator models are equipped with a factory installed and pre-wired thermostat which will prevent operation of the fan below 35°F outdoor temperature; normal operation of the fan will resume once the temperature outside rises near 50°F
- Constant operation helps vent radon gases, treated wood off-gassing and other odors that might migrate into living areas
- 1-fan and small face plate forventilation openings through brick foundations
- Ventilators are installed inside crawl space behind existing ventilation opening; screws and masonry wall anchors are included
- Efficient
Features
| Item Weight | 4 |
| Wildlife Guard | Yes |
| Voltage (volts) | 115 |
| Ventilation Type | Exhaust |
| Airflow (CFM) | 110 |
| Recommended Sq. Ft. | 1500 |
| Thermostat Controlled | Yes |
| Color/Finish Family | Metallic |
| Returnable | 180-Day |
| Horsepower (hp) | .01 hp |
| Material | Galvanized Steel |
| Amperage (amps) | 0.30 A |
| Color Family | Metallic |
| Product Weight (lb.) | 4 lb |
| Product Height (in.) | 14 in |
| Cut-Out Diameter (in.) | 162 |
| Product Depth (in.) | 2 in |
| Product Width (in.) | 7 in |
| Manufacturer Warranty | 1 Year |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 2300 reviews
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Product Reviews
★★★★★ 5
Great refill for great product!
The Eufy Official Accessories, 6-Pack Large Capacity Dust Bags Compatible with C20 Omni Robot Vacuum provided a perfect fit, and we couldn't be happier with the quality and performance t. The fit was perfect, and the bags were easy to install. Just pop them in and go!
Each bag holds an an amazing amount of debris, and I've noticed much less dust escaping. If you are looking for a reliable replacement that works just like the original, these are a great buy. Highly recommend!
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Reviewed in the United States on May 26, 2025
★★★★★ 5
Efficient & nice
Works great~ and helpful
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Reviewed in the United States on October 9, 2025
★★★★★ 5
Es de la medida adecuada
No he tenido ningún problema en cuanto a la detección de la bolsa
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Perfect fit.
Fits perfectly in my eufy Omni C20. I originally bought some off brand bags, but the cardboard part for the opening was a tad bit too small. These however are perfect. They also come in a small box which is convenient for storage. If you have the eufy Omni C20, buy these. Skip the off brands.
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Good bags
Works very well and I happy with the bags
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Reviewed in the United States on May 21, 2025