With the Grill Booster you expand the possibilities of your Big Green Egg barbecue. You have more cooking surface by placing the stainless steel grid on top of the standard grid. In addition, this construction is for situations in which dishes have to continue for a while at a lower temperature. Or when certain preparations are optimal when you grill indirectly. You attach the Big Green Egg Grill riser to the standard grid on your Big Green Egg Barbecue L, XL or XXL.