4" Duct Fan with controller
This fan works as expected and moves all the air that I need to move. It has a lot of functionality to it. In manual mode the fan can be run at any speed. In auto mode I use it to evacuate high temperature air or high humidity in my 4x4 Mars Hydro tent. There many more options as well. I also had great communication with Mars Hydro from shipping to installation. Products like this help toward letting the tent do the work for me.