The ceiling fans like the Wen, Jet, Shop Fox, etc removes fine airborne dust particles and helps to improve the overall cleanliness of the shop. My box fan with a furnace filter sits on the floor next to my saw and it sucks up a ton of fine dust. I hate wearing a respirator and rarely use one unless I am cutting some exotic woods or MDF. So, my system is as follows: I have the ceiling unit on most of the time, and usually set it to run for 4 hours when I leave the shop for the day. I also run an unfiltered box fan on low from about five feet, on a bench, away pointed towards my sawsaw. Then I have another box fan with a furnace filter cable tied to it on the floor a couple of feet away from the saw. I find this works great to keep the scroll dust out of my face and lungs.I learned the box fan trick years ago when working residential remodel work. I have seen examples on-line of extravagant boxes that people have made to put the box fans in, though I believe in the KISS theory on this i.e. Keep It Simple Stupid. If you want, I can take pictures of my setup and post them tomorrow..