Orion FansOD4010-24HB | 24 VDC | 40x40x10 mm | 7 CFM | 25dBA | 6000 RPM | Wire Leads | Crosses with C33903 (Nidec), GDA4010-24BB (Comair-Rotron) & AD0424HB-G76 (Adda)

Very quiet fan that seems to blow a lot of air. Perfect fit for my Ender 3. Keep in mind there are only bare leads on this fan so you will need to either crimp the connector or solder pre-made ones onto the end. This fan is a perfect 24v replacement for the 24v motherboard fan on the Ender 3.

I placed this onto the motherboard fan slot of one of my Ender 3 printers as a test to see if I wanted to swap them all over. The good news is that it moves a lot of air - definitely more than the factory fan it is replacing. However it came at a cost of actually increasing the volume/noise level instead of decreasing it as expected. This fan is not as quiet as the stated dB spec and therefore not worth the very premium price.

Purchased for my Ender 3, man did this make a difference in noise. This is basically a whisper compared to the stock fan.

I was surprised at how much air this little fan was putting through on my CR-10S Pro V2, but even more surprised at how loud it is. I was trying to replace an already loud stock hotend fan on this printer so went with this one, but it is just too ridiculously loud and has a little "whine" to the noise as well. Going to go with a Noctua next time, I think.

Definitely pumps out the air….. but 25db?I just tested and it’s easily double that. 52db on my meter in a quiet room. Will Run it anyway as im tired of replacing cheaper fans that create issues. Still quieter than the stock fan.