Primo has always been at the pinnacle of innovation and diligently trying to make your Primo Grill, better. This complete kit from Primo (324 + 333) allows you the ability to transform your entire Primo XL 400 Grill into an oven or a low-temperature smoker. These ceramic plates will enhance the indirect heating ability of your ceramic grill for the best slow roasted chicken, smoked fish, or baked chocolate chip cookies. Adding these ceramic heat deflector plates (324 + 333) to your Primo Grill with the heat deflector racks will add a new level of versatility to your Primo Grill.