This is an optional 16 gauge 304 stainless steel 36" flat round fire ring pan that has a 1/2" nipple welded in the center to connect gas supply to bottom of pan and fire ring to the top of pan. Also available with a 3/4" high capacity nipple as well. All of our fire pit pans have water weep holes for drainage. This pan is commonly used with our 30" and 36" fire rings.