When you are cooking several different foods at once or when preparing meals for a large crowd, this multi-level rack increases the amount of cooking space in your Egg. starter component for the Expander – The ultimate expansion system for an Egg. Works with the 1 piece convector basket. Elevated sliding cooking grid with 4 in. (10 cm) clearance for easy access Reverses for low-level cowboy style grilling Designed to connect to existing cooking grid Compatible with XL Big Green Egg