Sorry bill. I have 2 little girls keeping me very busy. The inside is wide open. I plane on building a shelf to get it up off the ground. About three foot. An uncle is giving me about 50 fire bricks to put inside for the floor. But I have been debating on building a shelf on the inside. So that I could build my fire and get a lot of coals built up and the spread them out. Then slide in a 16 by 25 inch shelf that would made out of firebrick . Let it heat up and then cook on it. Any ideas or advice. I can take the top off. I added a second stack and have two dampeners for them.