[Roarvette]

I have a smaller shop, 800S.F., and I built this, it works incredibly well.
It will change (filter) the entire shop every 5 minutes.
I built this because I have an air conditioned shop and just can't have all that humid air coming in.
I use it mainly when sanding, grinding and painting. With painting you have to remember that only the particles get filtered, but the fumes stay, so keep the respirator on.