Temperature range Ambient Temp. +5 to 70°C Heating elements are placed in ribs at the bottom and sides. Double walled inside Stainless Steel304 .The door has synthetic rubber gasket. Outside Mild Steel painted in epoxy powder coating/stainless steel with wire mesh adjustable shelves, two indicators and on/off switch. To work on 220/230 volts A. C. With OR with out one number Air circulating Fan & Microprocessor based PID temperature controller. Specially Designed to maintain 37oC temp.