1) Laminated board 2) Monocrystalline silicon 3) High efficiency and long life 4) Good quality ... .58AmpereCells Array72(6*12)CellPanel Size1580×808×35mm3Net weight14KGCell TypeMonocrystalline solar cellStandard Testing Condition1000W/m2, AM 1.5,25°CWarranty5 YearsLifespan20 ... board, EVA glue, 3.2mm thick tempered glass, aluminium frame 180W Solar Panel