Double walled, Inner chamber made of Stainless Steel 304. Outside Mild Steel painted in epoxy powder coating / stainless steel 304 with wiremesh adjustable shelves, two indicators and on / off Switch. Heating elements are placed in ribs at the bottom and sides. Temperature range Ambient +5°C to 250°C. To work on 220/230 volts A.C. With one number Air circulating Fan & Microprocessor based PID temperature controller.