Triple wall construction. Inner chamber manufactured of stainless steel. Outer of Mild steel powder coated finish/Stainless Steel. Temperature Range: Ambient to 400degree c. Digital temperature controller cum indicator controls the heating process. Better position Force air circulation for uniformity of chamber temp. 4" glass wool insulation is provided in between the walls to have skin temp. below 40degree c. Enconal Finned Heater is offered as Heating element.and these High Temperature Oven are available at affordable rates.