Heat Deflectors & Pizza Stones Recommendations for Primo Grills Wondering what ceramic stone to use for pizza or with CGS & Primo Grill accessories? Here's a quick table that outlines your best stone options. How to use the table: The left column lists the recommended stones for the Primo Grills. The right column lists the accessory and recommended stone sizes & shapes for the accessory. The best recommendation is highlighted in red. Red is Recommended. Primo GrillsStone Size Pizza, CGS & Primo Accessories XL Oval CGS Oval, Primo Oval, 13"x17" CGS Oval, 15" CGS, 16" CGS & Primo, 16" Primo Glazed Pizza Stone (13x17-F), (15-F), (16-F) CGS or Primo Deflector Plates (Half Oval-H,P) Large Oval CGS Oval, Primo Oval, 13" CGS & Primo, 13" Primo Glazed Pizza Stone (13-F) CGS or Primo Deflector Plates (Half Oval-H,P) Junior Oval Primo Oval, 13" CGS & Primo, 13" Promo Glazed Pizza Stone (13-F) Primo Deflector Plates (Half Oval-P) Kamado Round 15" CGS, 16" CGS & Primo, 16" Primo Glazed Pizza (15/16-P,F) CGS Woo Ring (13/15-H,P,F) Primo Deflector Plates (13/15-H,P,F) H = Half Stone, P = Pair Half Stones, F = Full Round Stone, Red is Recommended