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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
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Description
18 in. x 9 in. Silver Galvanized Steel Crawl Space Fan VentThe Tjernlund UnderAire Series V2D Crawl Space Ventilator fan is designed to circulate fresh outdoor air underneath homesand 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 alsocause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases,
The Tjernlund UnderAire Series V2D Crawl Space Ventilator fan is designed to circulate fresh outdoor air underneath homesand 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 alsocause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated wood off-gassingand other odors that might migrate into living areas. The V2D is controlled by a dehumidistat whichactuates the fan if the relative humidity rises above the selected set-point.- Fan powered crawl space ventilation quickly reduces moisture helping to protect both home and occupants
- Ventilates excess moisture, the cause of mold, mildew and wood rot. Increases air circulation to fight condensation
- Constant operation helps vent radon, treated wood off-gassing and odors that might otherwise migrate into living areas
- Increases air circulation to fight condensation. 220 CFM
- V2D is equipped with a factory installed and pre-wired thermostat which will prevent operationof the fan below 35°F outdoor temperature; normal operation of the fan will resume once the temperature outside risesnear 50°F
- Each fan is 25-Watts, inexpensive to operate
- 2-fans to maximize airflow
- 2-fans and large face plate sized forventilation openings through block foundations
- Includes thermostat, dehumidistat,pre-wired 6 power cord and hardware packet
- Turns on and off automatically to minimize power usage
Features
| Item Weight | 7 |
| Shape | Rectangular |
| Color Family | Silver |
| Product Weight (lb.) | 6 |
| Intake/Exhaust | Exhaust |
| Automatic/Manual | Manual |
| Color/Finish | Metal |
| Power Type | Electric Powered |
| Returnable | 180-Day |
| Features | Built-in Screen,Built-in Thermostat,Thermostat Controlled,Wildlife Guard |
| Material | Galvanized Steel |
| Mounting Position | Wall Mount |
| Rough Opening Height (In.) | 6 in |
| Product Height (in.) | 18 |
| Net-Free Area (Sq. In.) | 1 |
| Rough Opening Width (In.) | 10 in |
| Product Depth (in.) | 14 |
| Product Width (in.) | 8 in |
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
4.4 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Love it!
Color: Black, Size: 30FT
This 30 foot leash is absolutely amazing and I would recommend it to any dog owner! The length is wonderful for allowing my dog to be controlled on a leash but have her own space so if she feels like she’s making her own independent choices and has stability to walk around in a controlled environment. It’s very comfortable to use. The weight is not super heavy. I would say it’s an ideal weight for it being a 30 foot leash. I use it every single day.
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Reviewed in the United States on February 26, 2026
★★★★★ 1
Worst product on the market for balls for dogs.
Danger Warning !! Immediately after throwing the first one, my golden doodle bit through it.She started choking it riped open this product is crap. I looked into the rest of them. Several of them were already broken. They balls are Dangerous to dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Fetchable
I got these for a donation to a dog rescue.
Dogs like balls.
Woof!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 13, 2025
★★★★★ 1
Total waste of money
I wouldnt give it one star but had to to leave a review. Just got these balls September 8, 2025. As of today we are on our third ball, September 13. My dog only used in field for fetch. He never layed down and chewed on it. The inside of the balls came apart. I pulled off felt to show where. The ball is otherwise intact. Never had this happen to any ball I ever bought. I researched and looked for good reviews even off Amazon because my dog is a border collie and loves to fetch. This is a huge waste of of money and bad for environment
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Reviewed in the United States on September 13, 2025
★★★★★ 3
Does the job
I do like that they come in bulk and that they weren’t too expensive but I definitely don’t think the quality is that high and they’re very easily falling apart but that’s probably because they are cheap. if you have a dog that is a they will get it into little pieces very soon after they have it. So I’ve had to put them up when we are done.
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Reviewed in the United States on March 12, 2024