Quick question. Could you make a simple scrubber just by filling up a 4 or 6 inch pvc pipe with carbon, mount it vertically in a cab and hook up the duct to the bottom of it and then go to the fan (outside the cab).. kinda like a "reverse chimney" full of carbon?. .. Thanks
I tried it with a piece of 6" duct, some eBay carbon pellets, and a carbon furnace filter. My problem was getting the resistance to my fan right. It was really pulling my fan speed down. I bought a phresh on eBay and it hardly slows down my fan and controls odors perfectly.
I was running a 343 cfm max fan. I tried putting less carbon in but didn't get the door control I needed.
to thick of a layer of carbon will bog down the fan as stated...that why most you buy are long tube with a 2 or 3 inch layer of carbon with a sizable core to draw air threw.