Ok folks , i finally found some 120 gallon horizontal propane tanks. So i will be postponing my 250 gal build. I have all the materials. Now i just need tons of technical advice on door dimensions, fire box size, cook chamber cutout, fire box half moon cut out and on and on. I am a welder but i have never attempted a smoker build. Please feel free to advise, comment , criticize as i embark on this build also i beg your indulgence especially when i dont understand things i will ask a million questions on the same topic as i prefer to measure ten times and cut only once. so please if there is anyone who has the time to help i would really appreciate it , i will post pics of what i have accomplishes so far later.