Had some blocks laying around, so dug down in pond dam a hair to put smoker at top for uphill draft. 16x32 on inside Facing west. Prevailing winds are north,south. Gonna be 8 feet to box. Post more pics when I get it there. Used an OK Joe last season to box, burned way to hot. It rained in there. Don't know what I will do with this box. Sell it. Good fire box for offset. Well thats it . Not an engineer.