The Imperial/Regal exact fit rectangular pizza stone occupies the space of 2 cooking grids to offer a large baking surface right on your grill. This reversible stone holds heat to quickly bake pizzas on the grill. The pizza stone fits on top of the grilling surface of most grills. Exact Fit for: Imperial Series, Regal Series, Regal Pellet Series and is compatible with all full size Broil King grills.