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Wathai 4 x 120mm GPU Mining Rigs Server Racks Fan with 100V - 240V AC Power Variable Speed Control, Big Airflow for DIY Cooling and Ventilation AV Cabinets, TVs Routers. Audio Amplifier, Refrigerator

  • Based on 1,302 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Mar 7
Order within 16 hours and 59 minutes
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Style: 4x120mm fan


Features

  • Ventilation Fan: Designed to quietly ASUS GT/RT- AC5300 , cool Xboxs, CPU/ GPU, Playtations, Rokus, TVs, receivers, mondems, routers, DVRs, window fans ,network appliances, DIY aquarium cooling and other audio video electronics
  • Variable Speed Control: 110V - 220V Fan power supply with speed control function, turn the knob to adjust the speed, 4V - 12V adjustable fan speed,and can turn off the fan . | Input: 100V - 240V 50/60Hz | Output: DC 3-12V 200-2000ma
  • DIY Vertical Window Fan: Can both vertical and horizontal, provide efficient cooling and ventilation. Mining rigs rely on the cooling power of fans for optimal operation.Double Metal Protective, the fan is equipped with double metal protective net
  • Easy to Install: Draw out air in refrigerators, provide ventilation in greenhouses, prevent amplifier overheating, and vent hot air from living room consoles like PS4. Y cable connects 2 fans, two fans can be 42cm/16.5 in far away from each other
  • Dual Ball Bearing: 240mm x 240mm x 25mm / 9.45in(L) x 4.72in(W) x 1in(H) in in total. | Rated Voltage :12V | Rated Current: 0.93A at full speed | Airflow: (82CFM)x4 at 12V | Speed: 2500 RPMx4

Product Dimensions: 9.45"L x 4.72"W x 1"H


Brand: Wathai


Power Connector Type: AC power plug


Voltage: 12 Volts


Wattage: 1.8 watts


Cooling Method: cooling


Compatible Devices: GPU Case, Laptop, Server rack, cabinet, mining rig


Noise Level: 32 Decibels


Material: Plastic


Maximum Rotational Speed: 2500 RPM


Product Dimensions ‏ : ‎ 9.45 x 4.72 x 1 inches; 2.71 Pounds


Date First Available ‏ : ‎ March 1, 2021


Manufacturer ‏ : ‎ Wathai


Best Sellers Rank: #97 in Computer Case Fans


Customer Reviews: 4.6 4.6 out of 5 stars 1,302 ratings


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If you place your order now, the estimated arrival date for this product is: Saturday, Mar 7

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Top Amazon Reviews


  • They have run almost 3 years continuously
Style: 2x120mm fan
Still running after almost 3 years. Seldom shut off. Good quality apparently, pulls heat from refrigerator cabinet, pretty quiet.
Reviewed in the United States on August 7, 2025 by TJ

  • Using the Fans as a Booster for an Ancient Floor Register
Style: 2x120mm fan
I have a 100+ year old house with large, 9 x 12 inch floor registers. I am using the 2x fan combo as a booster fan for a register on the second floor. Because there is a transformer which decreases the voltage to 12 volts or less, it is safe to put the fans under the register grill and in the ancient metal ductwork. The power cord to the fans has a male/female connection which is less than 1/4 inch in diameter. This makes it easy to feed the cord through the cast iron grillwork. I did have to make a small wood frame to hold the fans in the proper place but one develops some skills when one has an old house like mine. The adjustable speed/voltage control allowed me to back off the speed and select one that is relatively quiet. The rubber feet also helped in this regard. The fans operate 24/7 when the air conditioner is running. The second floor did not get nearly enough cool air (the system was designed for heat, not air conditioning). By letting the fans run they also draw cooler air from the return registers on the first floor when the compressor is not running. I definitely noticed that there was much less temperature stratification between the floors when I installed my first paired unit. I just bought a second unit which I will install shortly. I am hopeful that after that I can even raise the air conditioner thermostat a degree and recoup (and then some) the energy costs for running the fans. I will probably take them out in winter and put them back in during the next cooling season. ... show more
Reviewed in the United States on August 2, 2025 by Engineer Earl

  • Decently quiet fans with a nice speed controller
Style: 3x120mm fan
I have been using these fans (the three-fan configuration) for several days now, and so far they're excellent. I am using them to bring in cold air through a window at night, and they're perfect for that task. The power supply unit comes with a relatively long cable, but for my situation I've opted to use an additional 33 ft. DC extension cable that I purchased separately. This allows me to keep the fan controller in a more easily accessible location. The fans themselves seem to be fairly well built, and they're held together with metal brackets between each individual fan. The grills on my fans are metal, just like the ones shown in the product images. The quality seems reasonable, and I think they'll hold up over time. The speed controller is rather lightweight and cheap feeling, and I'm not sure how well it's constructed internally. Nevertheless it does work properly, and it offers a good range of control for the fans. It doesn't get hot or make any worrying noises, so that's a good sign. I'll be interested to see how well these fans hold up after long term use. Right now I'm planning to use them during the winter months to bring cool air into a room with multiple computers. I'd recommend these fans. ... show more
Reviewed in the United States on October 10, 2022 by Jamie Champion

  • Easy to use and setup. Works well thus far.
Style: 2x120mm fan
Easy to use and setup. Works well thus far.
Reviewed in the United States on September 29, 2025 by Richard C.

  • Works Great!
Style: 3x120mm fan
I think it's pretty nice and moves alot of air. I'm using it in my Grooming but as a exhaust fan that I attached into the bus window. Pretty quiet too!!
Reviewed in the United States on February 27, 2025 by K. King

  • Good controller, good fans
Style: 2x120mm fan
These are good, solid fans, and come joined together with a removable bracket. They also come with a set of 4 "feet", making it useful to set on other devices for cooling. At full blast, 170CFM for the pair, they are fairly noisy. But with the controller set to the 9 or 10 o'clock position, they are fairly quiet. To be honest though, if you were to use these for studio or home theater gear, there are much more quiet fans available. I'm using them with HEPA filters for workbench "clean area" use, so the noise is not a relevant factor. ... show more
Reviewed in the United States on December 11, 2024 by Andrew S.

  • Makes a excellent small window fan.
Style: 3x120mm fan
I have a small kitchen window that I like to keep a small exhaust fan in. I used to buy those three fan jobs that would gunk up, be impossible to clean then die. These fans are super easy to clean. They also move the air like nobody's business! I love the variable speed control. At the highest speed they can be a bit noisy but nothing you cannot live with when you need good air movement. Another plus is they are very portable. You can move it around anywhere you need them for just about any purpose. Great item for the price and I expect they will last a while if maintained properly. ... show more
Reviewed in the United States on December 29, 2023 by Robert F

  • Worked perfect for cooling down a 6'x4' dog kennel.
Style: 3x120mm fan
I don't think there anything about this product that I dislike. Fans are just like basic PC fans, but the plastic frame is not cheap, the motors are brushless, and the dual ball bearing make them run so quiet. I have to build my own kennels as my puppies need one that they can fit in together, yet it can't be too big or else they use the restroom in it. This last one I built with doubled up 1/2" plywood, I foamed the top, front and backsides in an effort to keep the cool air inside. The plan was to have some holes in the back and a very open gate like door to make sure there was plenty of airflow. Plasi glass on the sides for light and a slightly slanted roof for rain runoff. The whole thing rolls easily on 4" casters and can be used inside or outside (recommended under a shaded area.) Unfortunately I couldn't find the right size gate when the time came! I built a door out of fence wire and mesh, but my dogs chewed it up within 2 visits. They really love to chew on things when left alone. Anyways, I ended up sealing off the door with more wood, and now the thing traps way too much heat! Indoors it's burning up inside. I bought 2 of these fans for a push/pull setup and on their lowest setting it's whisper quiet, and yet when I crawled into the kennel it was nice and cool. Highly recommended, good quality, easy to install ... show more
Reviewed in the United States on May 9, 2022 by Syrian Desera

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