Breakthrough air Lift hinge reduces dome Weight by 96% Exclusive divide & 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 New advanced multi-panel firebox six-piece design eliminates breakage