One of our firepits we designed and assembled for a customer. The material we used was 1/4" plate with a grill top that is removable. You can add more gills (up to 5) more as you like, maybe potato's on the bottom then steaks above? We finished it with a high temp glossy paint to give it resistance from weather and fire. This was a beautiful firepit and it was really fun working on it with our client.