I built this for a friend before I build my Personel one. My intake and outtake locations in the smoke pit enable this smoker to hold even heat all the way across the 66" length. Here is some pics. Let me know what you think and if you would change anything. Or if you have any ideas that I should incorporate in mine. I do plan to use a square insulated fire box on my Personel one. I hope to start mine later this year.