The Kamado Joe KJ15040721 Classic III 18-Inch Ceramic Grill includes the newest in kamado cooking innovation, the revolutionary SloRoller Hyperbolic Smoke Chamber insert. Harnessing the power of cyclonic airflow technology to control heat and smoke, the SloRoller insert is designed to perfect the taste and texture of the food on low-and-slow cooks up to 500 degrees Fahrenheit and is easily swapped out for heat deflector plates when searing or grilling at higher temperatures. As with its predecessor, the Classic II, the Classic Joe III also includes the Divide & Conquer cooking system which is composed of a 3-tiered rack setup (only on Classic Joe III) that holds up to four additional half-moon grates and allows for a larger cooking area up to 510 sq. inches. It also allows varying height levels for different temperature ranges giving you the ability to grill whatever you want however you want. The Amp firebox is made of high-fire, heat-resistant ceramic plates that are capable of resisting damage and breakage from high heat and stress. Sitting atop of the firebox is the 304 stainless steel charcoal basket that allows for easy cleanup and conservation of unused charcoal by quickly sifting ash between the basket bars. Once the ash is sifted, the slide-out 304 stainless steel ash drawer gives a means of effortless removal. At the top of the Classic III is the powder-coated cast aluminum Kontrol Tower top vent that provides precise temperature control by controlling the airflow through the kamado and stays on its current setting even while opening and closing the lid. The Air Lift Hinge makes opening and closing the lid a breeze by reducing roughly 96 percent of the weight of the lid. The Classic III also comes equipped with an analog thermometer, a 304 stainless steel latch and firebox ring, a wire mesh fiberglass gasket, grate gripper, an ash cleaning tool, 3 tiered cooking rack, 2 half-moon cooking grids, and a SloRoller insert.