Ok. So my cabinet is going to be 4'x3'x2'. My ductwork is probably only going to consist of the plastic piping they use for plumbing, 4" or 6" in diameter max. I will have passive intake as well.

So can I mount that carbon scrubber into my plastic ducting somehow? I'm not much of a plumber haha. Or should I scrap the plastic piping idea? I've looked all around on here to find a cabinet where someone used that plastic hard tubing as ductwork and incorporated a fan and carbon scrubber in there. Sorry for all the questions guys I'm just trying to get this planned out perfect so I don't find any surprises down the road. Thanks.