Primo Extended Cooking Rack For Oval Large: Maximize the space and versatility of your Primo Oval Large Grill using the extended cooking rack. This rack attaches to your existing Primo cooking grates and offers a unique way to cook different foods on your grill. With this Primo multi-tiered cooking system you can cut the time of cooking for large groups in half or make a variety of foods all at the same time. Purchase two extenders (1 per box), one for each half of your grill, and increase the cooking area to four distinct grilling zones. Set up a searing zone on one side, and an indirect coking zone on the other.