DE-109HOT AIR OVEN UNIVERSAL (MEMMERT TYPE) ALTIS MAKE CE Certified These are sturdy double walled units with outer chamber made of M.S. sheet duly powder coated paint with inner made up of or S.S. sheet. The gap between inner and outer chamber is filled 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. Temperature is controlled by DIGITAL Temp. Controller from 50 0C to 250 0C ± 1 0C. Air ventilators are also provided on the sides of the unit. To work on 220/230 volts A.C., Air Circulation fan also provided. With 2 Shelves. Inner Chamber Sizes Capacity 300 x 300 x 300 mm. 28 ltrs. 355 x 355 x 355 mm. 45 ltrs. 455 x 455 x 455 mm. 95 ltrs. 455 x 455 x 605 mm. 125 ltrs. 605 x 605 x 605 mm. 224 ltrs. 605 x 455 x 910 mm. 252 ltrs. 605 x 605 x 910 mm. 336 ltrs.