These are sturdy double walled units with outer chamber made of M.S. sheet duly Powder Coated painted with inner made up of 304 grade S.S. sheet. The gap between inner and outer chamber is fitted with high grade glass wool to avoid thermal losses. Beaded heating elements are placed in ribs, at bottom and sides. Inner chamber is provided with ribs for adjusting perforated shelves to convenient height. The door is fitted with glass viewing window to facilities perforated shelves to convenient height. The door is fitted with glass viewing window to facilitate inspection of sample without disturbing the test temperature. Temperature is controlled by “EGO” / “JUMO” GERMAN hydraulic type capillary thermostat/ digital Temp. controller from ambient 70DC ± 0.5DC An L-shaped prismatic thermometer is fitted to unit for reading the chamber temperature (only Thermostatic Controlled) Air VENTILATORS are also provided on the sides of unit. To work on 220/230 volts A.C. Supply.