Enclosed base with castors. Pictured pans sold separately. 3500 BTU's per burner. Natural or LP Gas. Control knobs with 3 settings. Pilot indicator openings. Fiberglass insulation between each compartment. Stainless steel undershelf on all units. 1 thick poly cutting board is 8 wide. Dry gas and electric units are used to maintain the temperature of pre cooked foods. These units are designed for dry operation. To keep food moist add a spillage pan with 1 2 of water.