Wathai 120mm 240mm x 38mm Computer Fan with AC Plug, Powerful Big Airflow Variable Speed Controller AC 110V 120V 220V 240V for CPU Mining Rig Machine Chassis Server Workstation Cabinet Cooling

The fan seems powerful and does the job, although noisy, yet the controller is cheap garbage.The first third of the controller does nothing. fan won't even work no matter where you put the dial. Once you pass the 1/3 point, the fan won't work continuously at low speed. It repeatedly turns on/off instead. From almost half the dial, the fan starts to work AT HIGH SPEED! there is no smooth low-speed fan here! Then towards the max, the fan is slightly noisy (but reasonable compared to the airflow it generates).I would have returned it, but worked to make something DIY so not worth the hassle, I am not happy with it, especially as it doesn't have the low speed that I needed.------ Update ----The seller reached out and offered a refund or replacement and nicely tried to address any issue. I declined as I have already installed the fan in my DIY project, but it is nice to be kind!------ 1-year Update ----This fan has been running in our bathroom for a full year now, 24/7 (we never turn it off, even when no one is using the bathroom. It is always running). It is up and running like its first day! I am impressed by the quality of it. no noise, no issue, and it is still as powerful as the first day. I would buy it again and would highly recommend it!!!!

I recently installed the Wathai 120mm x 38mm 360mm Computer Fan in the wall of my chicken coop, and it has been a game-changer for managing the heat. With Florida's intense heat, this fan has successfully dropped the temperature by 3-4 degrees, making it much more comfortable for my chickens.The fan's powerful airflow, rated at 135CFM per fan and adjustable speed up to 3000 RPM, ensures efficient ventilation. I love that it comes with a variable speed controller, allowing me to fine-tune the airflow to keep noise to a minimum while maintaining effective cooling.Installation was straightforward with the included screws, rubber feet, and speed controller. The fan's compact size and robust build make it a versatile choice for various applications, but it's been perfect for my coop. The ball-bearing motors promise a long lifespan, which is reassuring given the continuous use.Overall, this fan has significantly improved the air quality and temperature in my chicken coop. It's a reliable and powerful solution for ventilation. Highly recommend it for anyone needing effective cooling in similar settings!

These are some fantastic fans and move some serious air! The only downside is the controller (potentiometer) doesn't do much the first 10% and they are a bit noisy, but that's to be expected from fans of this size. I run mine no more than 50% power and that's more than enough for what I need them for.

These are pretty strong and do the job but sure are loud. The controller also starts to heat up past 50% power output.

Moves less air than a standard box or pedestal fan which is what I wanted. It is super quiet and I want a fairly low flow for my wood stove. It has a little high pitch noise at its highest speed so subtract 1 star

The media could not be loaded. Using it as an exhaust fan for the winterized screen room. We cook with crock pots, air fryers in that room and we smoke. It does a great job at keeping the air fresh.

I purchased the 2-fan configuration. It is solid, well-built, and easy to physically configure. The cabinet in which I mounted it had a slightly different hole pattern (wider spacing) but I just removed the corner mounts which held the two fans together and inserted the bolt-nut, and everything perfectly. My cabinet is steel so rather than drilling holes to mount the speed control, I simply glued four rare-earth magnets on the back and placed it on the inside of the cabin. Worked perfectly. This is a very good set of fans and provides lots of flexibility to mount on cabinets.

Greats fans that cool down my Norcold RV fridge coils that are outside. It stopped working after 10 months of heavy use. Contacted the company and they quickly sent me a replacement. Great company that stands behind their product!