316L Stainless Steel outer-body construction offers increased durability in marine environments 304 Stainless Steel internal components. Has the same flame thrower ignition as the built-in and freestanding grills. Utilizes the heavy duty cast stainless steel H burner, flame tamers, and 12mm hex cooking grids as the built-in Pro series grills. Uses 1lb Propane Cylinder or 20lb propane tanks with tank adapter. Can reach temperatures high enough to sear steaks. Two front facing clasps for locking the lid in place during storage or transport.