So this winter I had a hell of a time keeping my pellets burning. As such i have decided to get rid of my mailbox and upgrade it a little bit. My new chamber will allow me to even burn some chunks instead of just pellets. This is still being worked on, but this is about 2-3 hrs into it so far. It is hard to get time between the kids and work. I am using 1/8" steel. that was part of a headstone concrete form that was too small for new regulations. I am cutting this out with just an angle grinder with cutoff wheels. The door itself is 3/4" larger than the AMNPS. I will be adding air dampeners to the bottom where the door is and I will have a stand that the pellet smoker or chunks can burn on. This is just something being made as I got sick of not being able to keep my pellets burning. I have no plans and did no calculations. I am pretty sure this will hold me over till I can locate my propane or compressor tank for the reverse offset smoker build I am going to build as soon as I can. I want to have me a real smoker, lol.