Specification as above but double chamber for cooling a sealed compressor unit has been provided below the chamber to work independently. Each chamber size 555 x 910 x 605 mm. a) Heating and cooling in separate chamber made of anodized aluminium. b). As in (a) but chamber made of stain less steel. c) heating & cooling in both chamber and chambers made of anodized aluminium. d) As in (c) but chambers made of stainless steel. OPTIONAL: i) Automatic 0-24 hours timer to regulate cyclic illumination conditions. ii) Automatic voltage stabilizer – 3KVA (must).