Primo Extended Cooking Rack For Oval (1 Per Box) Fits Oval JR: With the Primo Extended Cooking Racks you can maximize and use all the space of your Primo Oval Junior Grill. Use two of these racks on your Primo Oval Junior to increase your total cooking area from 210 sq. Inches to 360 sq. Inches! 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. A must have accessory for your Primo Oval Junior Kamado Style Grill.