The heavy cast iron Firebox Divider allows you to split the fire box area to create two distinct cooking zones for simultaneous direct and indirect cooking. Also, conserve the amount of natural lump charcoal used for smaller cooks. Compatible with these GrillsThe heavy cast iron Firebox Divider allows you to split the fire box area to create two distinct cooking zones for simultaneous direct and indirect cooking. Also, conserve the amount of natural lump charcoal used for smaller cooks. Compatible with these Grills: Junior Charcoal XL Charcoal Large Charcoal XL Charcoal Jack Daniel