Review on 🌬️ MakerFocus 4pcs 12V 40mm Mini Cooling Fan for 3D Printer, DVR, and Small Appliances - Efficient Replacement and Repair Component with Cable by Nonito Shin

High-quality workmanship. Quiet and powerful. Creates a powerful airflow. I bought 4 and installed them in an incubator I had made. 2 boxes of chickens and ducks hatched, they worked 24/7 for 2 months. Check the airflow after connection. If you find the electrodes are upside down, unplug the wires from the connector, flip the position, and plug in. You don't have to use a soldering iron.