This is a one serious grill/smoker. You can grill, smoke (reverse flow) or bake with wood and/or charcoal; very heavy stainless steel construction; grill weighs 390 pounds. 481 sq inch top grilling surface. Secondary smoke rack can be used for an additional 328 sq inches of additional smoking space. Two 13"x18.5" cooking grates. One 23.25"x14.125" bottom coal grate or secondary smoking grate. All grates are 1/4" thick solid 304 stainless steel. Constructed from thick 10 gauge steel. External height adjustable coal grate for grilling and searing. Integrated firebox for low and slow smoking with slide out charcoal basket and ash pan. 1/4" thick firebox door with solid stainless steel handles. Heavy duty Stainless Steel hinges. 16 gauge stainless counters. Stainless steel handles and hardware. Tel-Tru Thermometers - stainless steel and weatherproof. Heavy duty metal swivel casters with hard rubber wheels. Industrial grade high temperature black satin paint rated at 1200 degrees F. Nomex High Temperature Gaskets around the lid and firebox door.