Primo XL Oval Cast Iron Charcoal Grate. PG0177807Heavy duty cast iron lump grate maximizes airflow, improves charcoal efficiency, and delivers steady grilling temps. Boost airflow and fuel efficiency in your Primo XL Oval with this heavy duty cast iron lump charcoal grate. Designed as a direct OEM replacement, the grate holds lump charcoal securely while allowing maximum airflow for hotter, more consistent burns. Why It Matters Improved airflow: Cast iron slots let more oxygen reach the fire for