My shop has no windows and no cross ventilation. The whole shop will fill with a haze of fine dust in a matter of minutes. Using a single stage DC with a bag filter only make things worse, and fills the room with dust in a matter of seconds. Therefore I bought the Jet air filter which is similar to the Griz above. There is no way you can remove fine dust fast enough once it is finely dispersed in the air. It does help with the fine dust that settles everywhere after making working in the shop, but the shop still gets very hazy. I've concluded, that if I want my shop to be safe and enjoyable, I need to catch as much dust as I can from the source. Thus, I'm shopping for a cyclone.