A client is getting me to build a mobile smoker for his rugby club. I was going to make him a 250 gallon, but worked out a little cheaper to build 2 smokers from the steel tubes I have. The base for the parrilla which will be mounted above the fireboxes We had a battle to get the 3 fireboxes lined up and welded together. It is 1/4" steel The bars attached are to help align it and make sure it is level The extra fire box in the center is to make coals for the parrilla. The parrilla will be mounted above these facing the rear of the trailer. Where we cut the 500mm center firebox to mate with the other 600mm firebox, we re used the cutout to double up the roof of the center firebox as a sacrificial plate so it lasts longer. Dave's measurements for the smokers. The trailer will also have an al asador on the front that swings out away from the trailer for cooking lambs etc. I will probably use the end off a 250 gallon tank for that.