Review on 🌀 High-Speed Brushless DC Cooling Fan 24V 40mm x 40mm x 10mm - Ideal for 3D Printers, Humidifiers, Aromatherapy, and Small Appliances (2-Pack) by Dean Gomatham

I've previously found this to be very noisy on my Ender 3 3D printer. When choosing the Dual Unit, I seem to have my choice of going from a 24V fan to a 12V -Fan switched and did not understand it. So apparently the 12V to 24V fans are still running, only the fans sound like a tornado or a jet about to take off. Just connected and installed a 24V fan. It's about the same, if not slightly quieter than a regular fan. Change to 5 stars was my mistake