A clay pot is fitted in mild steel square tank . . The tandoor is provided with 4 handles for loading and unloading along with a provision for ash outlet . The space between clay pot and square tank is duly insulated with glasswool , ceramic powder and rock salt for maintaining heat in tandoor . The tandoor is accompanied by 4 castors under the bottom for better mobility of tandoor.The top surface is usually given a finish of Portland cement .There are various options available for top finish such as marble top , granite top etc