Wderair 4 x 120mm Server Rack Mount Fan 12V with 100V - 240V AC Power Variable Speed Control, High Airflow for DIY Cooling Mining Rig, AV Cabinets, Home Theater, Refrigerator, Greenhouse

I got the fan for my bathroom air circulation, with these fan i can blow out the condensation after a hot shower, very easy to instal and the fan is also quiet, I LOVE IT !!!!

These fans sound almost like a drone when you run them at high speed, though not quite as loud as a drone. That being said, I dont need to run them at high speeds, as they give good airflow even at lower speeds. I have them running at about 30% or so, and they keep my AV equipment cool without any significant noise. I used two blowing air in near the bottom and two blowing air out at the top, and I can actually feel the airflow in various spots in my cabinet with my hand, even at that low speed. I can see these being useful for a wide variety of applications.

High quality fans with a variable speed controller. Note that when youre moving as much air as these three fans combined are capable of, theres going to be a bit of noise. It will help if you use foam tape or some other rubber- or compliant-mounting method that isolates these, and that will help ensure the least noise. Recommended.

Review is for Wderair 4 x 120mm Server Rack Mount Fan 12V with 100V - 240V AC Power Variable Speed

These fans have a speed controller that operates them smoothly. There is a little noise associated with them but not distracting to the user. When the 4 fans are all bolted together they move quite a volume of air that would be sufficient to keep most electronics operating and cool. The individual fans call for 12VDC as a power source and are configured as two fans per connection. There is ample hardware to mount these fans for use in most electronic racks.

Installed on an open networking rack with the included hardware. The four fans span the rack perfectly and the holes line up with the rack holes. They thoughtfully included the clips to assemble the two fan sets together to make this possible. Easy plug and play from there, but boy are they loud when fully spun up. Just to be clear, most rack fans are loud. They maximize airflow over decibel levels. My other rack fans are actually computer fans that I select due to the low acoustic impact. I did feel I needed a bit more airflow at one point in the rack that gets rather warm. These fans do the trick. The speed controller helps me balance that decibel/airflow balance to the best effect. Quite pleased with them.

I ordered these to cool down some network appliances I have installed inside a closet. I have the 3 fans pulling air from a vent in the closet onto the appliances. They are extremely easy to install, just plug them in and dial in a speed. They can be configured to be completely silent to moderately noisy. Running these at their full speed is still lower volume then a server fan but audible from across a 20ft room at midnight. During the day running at full speed I could not hear these from across the room. Running these at a moderate speed produced enough air for my scenario and produced a very low audible volume.

I bought this to install in my living room console to vent the hot air generated by my PS4, which is tucked away inside a compartment with a closed and locked door to keep my one year old from getting into it. The only problem is that the heat buildup caused by running graphically intense games would quickly get the inside of the cabinet way too hot, posing a damage risk to the PS4. This was just the solution I needed. I measured and cut an opening in the thin backing material of the console cabinet and installed these fans to exhaust the hot air out, and left the on/off/speed control switch sitting on the surface of the console until I can rig up a thermal switch or add a smart outlet to control it.

I have my AV Receiver set up inside a closed cabinet, and have blown two of them over the last four years due to excessive heat buildup. I meant to install a fan to help cool the cabinet when I bought my last receiver, but never got around to it. I recently paid the price. So I finally got my fan, and it works great!! I cut an opening in the back of the cabinet, and mounted the fan so its blowing the hot air out. Ive read some of the comments about excessive noise, but I disagree. If youre sitting right next to the fan, it is dead silent until you turn the speed control up to about the 1/3 mark. Then you start to hear the soft whooshing of the air being blown by the fan, but only if youre sitting right next to it. NO noise from the bearings whatsoever. The air noise does get progressively louder as you continue to adjust the fan speed upward, and is quite loud beyond the 50% mark. But never any mechanical noise from the fan at all! I have it set at just below 50%, and it has significantly cooled down the interior of the cabinet. Hoping my new receiver lasts a lot longer than 4 years!!! I would definitely recommend these fans!

These fans are solid, appear to be good quality. I got them for my greenhouse, so will have a more detailed review after next summer, and will update then. But in the meantime they do move quite a bit of air, so should help keep the greenhouse ventilated.