Double Walled. Inner Chamber: Inner chamber made of Stainless steel. Outer Body: outer body develops using high grade mild steel with powder coated finish. This coating keeps safe the unit from rust and normal scratches. Insulation between inner & outer wall with glass wool/ mineral wool thick to avoid any heat loss. Temperature range above ambient to 100°C ± 3°C. The Temperature Is Indicated And Controlled By A Digital Auto-Tuning PID Temp. Circulation: Forced convection system through use of blowers & motors that provides for superior mixing as well as strong dispersion. Suitable for operation on 220 V, 50 Hz single phase, AC supply or 440 V 50 Hz, three phase AC supply, for bigger size of curing tank.