http://charcoalsmokershop.com/Charcoal-grill-domed-red-large Grill Dome has added extra headroom for improved multiple level charcoal grilling. Stainless steel hardware, heavy duty 304 series stainless steel; made of the new TERAPEX Ceramics which can withstand higher dome temperatures than the previous NGII ceramics; designed to withstand extreme temperatures and also optimize the balance between porosity and density to deliver improved cooking results for a wider array of foods.