The Primo PRM325 Ceramic Heat Deflector Plates come in set of 2. They can be used individually or together. Ceramic heat deflector plates allow you to cook on your Primo grill using indirect heat. In order to use the heat deflectors, a set of Heat Deflector/Drip Pan Racks (PRM313) is required. When used alone, the option of direct cooking is available on the other half of your grill. When used together, simply set both on the drip pan racks* to transform your grill into an oven or low temperature smoker. The drip pan racks (PRM313) are sold separately. Together, the PRM325 and PRM313 are for use with the Primo Oval JR 200 grill.