... insulation keeps the heat where it should be, inside the oven, and forbid to transfer heat to the working environment.main ... type of the totary ovens:description modelpower oven dim(cm)weightcapacitytrays numberrotary oven MS-3027KW 150×100×220 850KG 30kg/h ... ×188×235 1050KG 50kg/h 16rotary oven MS-10045KW 195×210×235 1250KG 100kg/h 32rotary oven MS-20080KW 213×310×230 ...