Primo Cast Iron Searing Grate for XXL PG00374Perfect Heat and Restaurant Quality Sear of Primo Cast Iron Searing Grate for XXL PG00374 Want bold sear marks and unbeatable flavor on steaks, burgers, and more with your Primo Oval XXL grill? Transform your outdoor cooking with the Primo PG00374 Cast Iron Searing Grate, built exclusively for the Primo Oval XXL charcoal grill. Crafted from heavy duty cast iron, this half moon grate ensures maximum heat retention and even cooking across the surface.