1,060 total Square inch cooking surface- 751 Square inches in the main chamber, 309 Square inches in the firebox chamber Reverse-flow smoker employs a Series of 4 baffles to guide heat and smoke through the main chamber delivering an even and delicious result Removable baffles and optional smokestack locations for a customizable setup. Number of Grates: 4 Firebox chamber features large stainless Steel fuel basket and clean-out door for easy ash removal Heavy-gauge all-steel construction, porcelain-coated cooking grates and multiple dampers for easy heat and smoke control