Our Fine Tune Reverse flow smokers are designed to even out the heat right to left and buffer temperature fluctuations. Reverse flow smokers are probably the easiest for a beginner or busy backyard cook to use. You can order your 2454 with 4 steel wheels or two steel wheels firebox side casters handle side. We offer this smoker with 1/4" thick fireboxes or 3/8 thick fireboxes. We sell it in these main cook chamber lengths: 40", 48" and 54". If built longer we would build with two lids.