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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
4.5 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Do it yourself
Size: 38"Height × 14" Wide
I purchased a similar set to custom make a dining room table out of butcher block, and it turned out perfect. So with the left over butcher block I purchased these legs and made the perfect kitchen island to match. It is very sturdy and a great price. Everyone wants to know where I purchased it from. I also put a piece of the butcher block across the lower bars and made a lower shelf. Love love love this.
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Reviewed in the United States on December 2, 2025
★★★★★ 4
Plan your project right & these will look great!
Size: 38"Height × 14" Wide
These are great legs for a table. They are sturdy and go together nicely. The painted finish is well done, meaning it doesn't scratch or peel or come off easily. Also the way things were packaged was considerate of the weight and possibility of damage during shipment. There were even extra attachment screws included which was helpful since I lost one under the dishwasher.
When considering what legs to purchase for your particular table, the height, dimensions, and weight of the top all need to be factored in. I used these bar height legs under a very heavy, 7' long X 2' wide top. Common physics dictates that there will be lateral movement between the 2 "H" shaped leg sets. There HAS to be support between the 2 H leg sets to prevent that lateral movement. So these alone will not support a long table very well, because physics. This is not in any way the fault of this product. Be aware that there is more to the stability equation and be prepared to add cross bracing to your project.
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Reviewed in the United States on April 4, 2025
★★★★★ 5
Hold my computer desk top repaired
Size: 38"Height × 14" Wide
Counter height table legs are sturdy and it holds a great amount of weight. I was easy to adjust height for the table we needed to be repaired with legs. It was a great choice in repair of computer desk. I had a desk that tore apart because of the press board siding.
Took the top of of siding and repaired with these legs. I am totally satisfied
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Reviewed in the United States on October 25, 2025
★★★★★ 2
Wobbly
Size: 38"Height × 14" Wide
Look great but they are not solid. Table is super wobbly
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Reviewed in the United States on August 21, 2025
★★★★★ 5
Modern, Sturdy, and Perfect for Outdoor Projects
Size: 38"Height × 14" Wide
These metal pipes made fantastic table legs for our outdoor wood table. They have a sleek, modern look that feels high-end. We sprayed them with Rust-Oleum for added protection, and they’ve held up great. Solid, stylish, and functional—highly recommend for any DIY furniture project!
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Reviewed in the United States on June 25, 2025