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

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.

These fans blow... but in a good way! It has a speed controller and is fairly quiet for 120mm fans. I set mine up on my desk to dry the hot glue that Im using for a sculpture Im creating. Theyre able to stand on their own even at 100% power, so I just place them on each side of the piece and leave it on as I work.

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.

4 Large PC Fans that can be assembled in various configurations with all the supplied Nuts, Bolts, Standoff feet, Rubber pads and connecting tabs.

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.

Good airflow. Easy to control on your own instead of dealing with automated fan curves and no slowdown under 30% and other such junk. You can use it to cool off computers or other high powered electronics inside of a entertainment center.

Worked perfect for our customer in their new custom cabinet

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 !!!!

Im using this to cool off my lights on a deep aquarium. It has kept the temperatures down in the tank which I was having trouble with.