As we now have Hi-speed internet, here are a few pics of a smoker I built and sold last year. The smoke chamber is a 120 gal propane tank and the firebox is a 20" elevator shaft casing, the chimney is a 6" sprinkler pipe. The trailer is made of 1" tube, I don't recall the exact dimensions. It pulled well and I could move it around by myself. The silver vertical pipe is conduit and is a light holder. It has 1/4" tuning plates and cooked very even from side to side. I put it on Craigslist kinda messing around and a lady bought shortly after I posted it. Didn't expect to sell it that quick.