The Primo Heat Deflector Plates For Oval Grills are flat ceramic stones that, once placed into position, simply converts your Primo Grill into an oven. The stones will deflect the heat away from the food meaning that you can roast, bake and smoke your favourite foods. The ceramic Heat Deflector Plates must be used in conjunction with the Heat Deflector Racks, and for each specific Oval grill model. Available to fit specific models, Oval XL 400, Oval LG 300 and Oval JR 200. Please choose your model when ordering.