I bought a couple of these off Ebay, the single paper towel model 0-1, and the 2 paper towel model 0-2. These things are built like tanks. They have 3/16 wall, 7 inches round, and a lid that weighs 10 pounds, at least it seems like it. Anyways, after putting all of these to use, but 1 large model, I decided to put it in the garage to filter my air compressor. The past couple weeks here in Pa. the humidity was terrible, and I was doing some painting. I was getting lots of water coming thru my air hose. This GCF took care of the problem with ease. I just wanted to throw it out there in case someone might have one of these in the garage and need a use for it. 2 rolls of paper towels makes a pretty cheap filter that works great.