Breakthrough air lift hinge reduces dome weight by 96. Heat range 225F 750F. Exclusive divide and conquer flexible cooking system multilevel half-rack design doubles cooking space and frees you to cook different foods on different levels and on different cooking surfaces. Patented all-aluminum no-rust rain-proof control tower top vent maintains consistent air setting for precise airflow management. All-new double-thick wire mesh fiberglass gasket offers superior air-tight seal and 10 times the life of normal industry gaskets.