Review on 🔥 High Speed 24V Hydraulic Bearing Brushless 40mm Fan (Pack of 5Pcs) by WINSINN by Sammie Prince

A little louder than I expected considering the hydraulic mounts. I only installed one of the five fans, so there's a chance one of them is quieter than the one I installed. However, it's no louder than the stock fan on the Ender 3 Pro. I've run it continuously for 15 hours on one occasion and a couple of times for 12-13 hours with shorter prints in between and there have been no issues. Since it's not designed for a specific application, you'll need to cut and solder the wires. Directly suitable for Ender 3 Pro. I gave it 3 stars for the noise because it's not just the forced air noise. There is a sound coming from the fan bearing itself as it rotates at full speed. It's for a 3D printer so it's not a problem, but I'll probably try to find something quieter in the future.