iono if its just cause im stoned or what, but the end without a endcap the 6-4" reducer part, how do you keep the carbon from spilling out into your ducting and how do you seal the inner screen in the reducer so that you get the most suction through the carbon....?if you could post a pick looking down the reducer that would clear this up for me...thx man


edit, ok looking more closly i can see how you made the seal, but the reducers i get at the depot dont have a lip on the inside were i would clamp the 4" sreen to, do you put in a 4" collar into the reducer to get this lip?