solar panel collector,solar flat plate,flat panels solar collectors,pressurized solar flat panel,flat panel solar water heate solar thermal collectorSize(LxWxH mm)2000x1000x70/80/90(mm)Total ... :galvanized steel,1.2-1.5mm thickness.The glistening obliquity:45 degreeHail resistance:25mm.Wind stress:180km/hHeat preservation:72-96Hours. solar thermal collector