Double walled, Inner chamber made of Stainless Steel 304. Outside Mild Steel painted in epoxy powder coating / stainless steel 304 with wire mesh adjustable shelves, two indicators and on /off switch to work on 220/230 volts A.C. Heating elements are placed in ribs at the bottom and sides. Temperature range Ambient Temp.+5C to 70C.The door has synthetic rubber gasket. With one number Air circulating Fan & Microprocessor based PID temperature controller. Specially Designed to maintain 37C temp.