... or glass mineral wool30mm (40g/cm3)8. Back PlateGalvanized plate, or aluminum plate, 0.5mm9.Surface Dimension(mm) :2000 *1000 ... less obtrusive and compatible with existing architectural designs.ApplicationThe water heating systems for commercial, buildings, hotels, hospitals, ... ,Southeast Asia, Mid East ,Western Europe. Flat plate water heater solar collector CE, SRCC, Solar keymark certification