Review on Wathai 120mm x 25mm AC Powered Fan with Speed Controller 3V-12V - Ideal for Cooling Xbox, DVR, Playstation, and Other Components by Brian Whitmore

This is the fan I bought for the FDM print case. It does exactly what I need it to do: clear smoke and heat while being quiet enough while I'm working within a few feet. It can pull air through the dryer vent through 5 feet of flexible tubing and the speed control gives me good control over the case temperature when I want to print ABS or similar. I was going to order a second one for my resin printer but it wasn't available at the time so I ordered another brand that looks and works exactly the same. And a few euros cheaper. But you can't go wrong with that!