Wathai 12038 120mm x 38mm AC Axial Muffin Cooling Fan 110V 120V Dual Ball

I wasn't quite sure what to expect with this ginormous fan. It actually moves more air than I expected. The fan blade is well balanced, and it turns very smoothly. It spins up somewhat slowly and then whirs at a high speed. It's somewhat noisy, maybe like a few old-style tower-type CPUs running side-by-side. However, you get a LOT of air movement for that noise. I have added a dimmer to the cord to throttle the thing down a bit. However, the buyer should be aware that a dimmer doesn't work very well on it. It will slow the fan to about half speed at 90% "on," and at about 75% "on," it won't run the fan at all. I think others have suggested a PCM module to control fan speed, but I'm OK with the dimmer for my purposes. In parallel with the dimmer, I wired the relay of a thermostatic controller. So when my equipment first comes alive, the fan runs at half speed on the dimmer. If the cabinet temperature exceeds a threshold, then the relay closes, and the fan runs at full speed. Very pleased with the fan. However, knowing what I know now, I might have ordered the next size down. ;-)

These motors are great for the application that we use them for. Easy to wire and seem to have sufficient airflow. We use these for additional airflow of reach in cooler condensers.

Works as expected, a very powerful fan. Came with mounting hardware and two sets of grills for the front and back. It is noisy but not more then the dB level listed by the manufacturer. Any thing that small (6 inches), blowing that volume of air, is going to be noisy. As other reviewers pointed out the power cord is not attached to the fan so you either have to solder the wires or use twist caps inside an electrical box.

There is a lot going on here. The building I am in... has a bunch of issues, that the superintendent seemed to find creative ways to work around. The Vent that I've rigged seemed to have a box inside with a side hole on the inside. It looks like it fits an enclosed exhaust vent, the light switch is conveniently under this vent. It looks like when they remodeled this building it had its own fan that was attached to the light, like how you would typically find. Speaking to these gentlemen they explained that there is a massive fan on the roof and it's all a passive system that should work. It does not work. You poop and the smell will travel. The problem with a system like this is airflow. They didn't think about the vairying pressures across the different connected apartments and ones who have their windows open will have a working exhaust, and since I belive in Air Conditioning in the summer... Yea.. So this fan, suspiciously... Supported by what looks like a creative idiot... Me... Works! The bathroom is kinda small to mid sized, 6x9 just about, and it will clear the smell in like 4 minutes. There is a lot going on. I'm sorry that I am not technical enough to give you valuable information, but I'm pretty sure what I have to say has some value? Noise: not as bad as a bathroom exhaust fan that is 2 decades old. If I foam the frame and mount it probably it would be pretty silent. Effective Air Flow given the configuration: There is fluid dynamics or air flow dynamics that you have to think about when using this type of fan. Usually you need to have the correct blades andthe shape of the frame affects it. So basically.. The edges and center is very weak, but there is a ring where the flow of air is the strongest, if you are piping or pushing it into a hole like I am... You need to be smart enough to plan all this out before hand to make the flow of air most effective. My rough estimate, and this has no real measurement outside of me using my skin to sense it... It's about 6 inches. You probably want 2 or 3 inches funneling into the hole. Suffice it to say it will do the job your looking for it to do. The construction seems pretty good, you can probably kill someone by using this thing as a weapon. Connecting it directly to the AC wall power... It take about 24 seconds for it to reach top speed. Lol there is no pot to control its speed, so the varying changes in Voltage causes it to slow and speed up, but it's running at Top speed. If you have bad ears and not OCD like me you might not notice. I highly recommend the dial thing for $14 bucks, that I saw Amazon recommend. I'll be moving out in a year and I have a house in Maryland. I will repurpose this for my shed. Lol it's half tool shed and it's walled off to have a chicken coup. I'm sure my girls will appreciate this fan attached to a relay that's controlled by temperature. Lol I hope this helps, this fan was overkill for what I need.. And I'm sure it will make you happy.

The fan on my MIG welder was dying but didn't want to pay $55 for a fan so this worked! The spec is almost the same but otherwise it's 120V so I simply swapped with the old fan to this new. The connectors at least for my welder plugged into this new fan. About the same noise level but now it's working again. The polarity for the fan wires won't matter as it's 120V AC. You only need to take off the screws on the red cover and the one facing the front to dislocate the handle. Very easy!

Very nice , does blow a lot of air and without much noise. Would recommend . I use 2 of these to keep my 2 video cards cool in my main gaming computer. Took of the side panel and lets these 2 fans do their job...They are blowing directly on the 2 video cards. When gaming in 4 K resolution nVidia graphics cards can fry eggs they get so hot. Well , with 2 of these fans I feel a lot safer than to have the 2 video cards overheat and be ruined.

Nicely built cooling fan which was purchased to move air through a storage shed. Moves a lot of air until it's placed in front of a screen, then the motor slows down significantly. Seems that the motor is rather weak.

Works well

ce que ca me prenait.

Works great. Pushes a lot of air for a small unit

This works well as it should

Works as it should

Just got it today, works great as an air hockey table replacement fan. Love it.