These Ovens are double walled in construction. The Inner Chamber is made of Aluminium / Stainless Steel Sheets and the Outer Chamber is made of suitably thick Mild Steel Sheet (reinforced with iron angle for bigger sizes) hammertone spray painted. 3" thick glass-wool insulation is provided on 3 sides as well as the door to prevent the loss of heat. "A" grade heating elements, which are completely shielded for protection against sample spills, are used for a temperature range from ambient plus 5ºC upto 300ºC controlled by a 3 heat Rotary Switch with an EGO Thermostat or a Microprocessor based PID Controller. Provided with suitable length of wire to work on 220/230 Volts AC supply.