I want to thank everyone that has posted pictures and directions. You have inspired me to build my own smoke house but I am not sure if I need to add a vent pipe. The size is 4x6x6 all out of Oak lumber. After everything was level we started with a rabbit cut on the boards 1x6 so they will overlap. Floor down now for the sides 2x3x6 still with the oak, the drill is our new best friend as this stuff is hard. The plan is to cover the inside with 1x6’s and then cover the out side with 1x6. I ordered the same type of burner that pops used, just not sure if vents will be enough flow or if I need to put in a pipe. Will post more of the build and if you see that I am doing something wrong please let me know so I can do some changes if I need too. Not sure what I am going to do to the top of the roof.