Wathai DC 4010 Blower Fan 24V Extruder Hot End Turbo Duall Ball High Speed 40mm x 10mm Radial Fans for Ender 3 3D Printer Cooling 2 Pack

I bought these to use to vent heat from a cabinet that I use as a humidity free place for my camera equipment. I have a small dehumidifier in the cabinet that generates a lot of heat. I drilled a hole just above the humidifier and positioned one of these fans above it blowing out. In the summer it will run 24/7. It is quiet and vibration free. So far, so good.

Installed as part of a dual blower upgrade for my 3D printer, an ender 3 v2. The only complaint is they worked too well and I had to turn them down so the fans don’t go to 100% or else the hot end was cooled beyond the printer’s heating capability.They are mid tier on noise, not exactly quiet but definitely quieter than the stock fans they replaced. And since they aren’t running at 100% they stay lower in volume than basically any fan running full tilt.Would order again.

Had to replace end of wiring with old plug in but works perfectly

These are small in size but moves lot of air. I am using it in one of my devices with Raspberry Pi to basically mover air from the case. It cools everything very effectively. Its loud at full speed, I drive these at lower voltage to reduce its speed slightly and the noise. I am not sure how long it will last but so far it seem fine in build quality.

these blow really great for their size and money and are pretty silent, it sounds like a old fan on low mode, it also doesnt blow out through the top it blows where the arrows are pointed

Nice little fans using them for airflow in a terrarium. They provide Good circulation and i like the 3 speed options. They’re just SUPER loud. My 4” computer fans are half as quiet as these

Worked well for my situation. Good value. Timely delivery

I used this to replace the blower fan on my 3D Printer (Geeetech Mizar S -- the shrouded fan that powers up after the first layer is placed). It works great, and the extra-long cable was nice (I only needed a few inches of it; I cut and spliced it to the original, smaller connector from my faulty stock fan). I did notice it's a bit louder, though, as it is a more efficient blower fan than my stock; in fact, I had to drop the fan speed settings by 25% because it was causing some of my print jobs to warp by the 3rd or 4th layer drop. Not a complaint, as I've been printing for years now and am quite used to adjusting its settings, but keep that in mind if you purchase this for your own 3D printer. Recommended. Will update this if it prematurely fails (as of this post, I've only used it for two days now -- about 5 print jobs so far).