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 make my own method to cooldown the tube of CO2 Laser Engraver, and works perfect to me.

Worked perfect for our customer in their new custom cabinet

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.

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.

This is one of the most durable built from metal. adjustable speed and airflow fans I have used. This is a 4x120mm server rack fans 110v . I got this for my greenhouse but can be used for servers and cooling computer systems as well as many other uses. I am very impressed with this very nicely made fan ,a great price for this heavy duty built fan.

OK. You want quiet fans that can move a lot of air? Check. You want 120mm fans that can REALLY move some air and dont care about fan noise? It has that too. You cannot complain with that at all. Variable controlled, not via software or through your UEFI (BIOS) but via your own two fingers.

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!

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 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.