Review on Optimized for SEO: Waterproof IP67 High Airflow 140mm (140x140x25) Fan by Coolerguys by Darby Perkins

This fan, while not immediately affected by moisture, only lasted a few months of constant exposure to ultrasonic fog. Dissolved minerals in my water settled all over the fan and got into the motor causing it to seize up. The engine is not sealed well enough to avoid this problem. There aren't many waterproof fan options, so I may need to find a way to keep the fan from fogging up. I can buy it again.