Power Peak: 50W; Power Peak Voltage: 18V; Power Peak Current: 2.78A; Open Circuit Voltage: 21.24V; Short Circuit Current: 3.12A; Conversion Efficiency: 18.6%; Size: 670*535*30*25mm; Glass: Tempered glass with low iron content / 3.2mm; Cells: Polycrystalline / 156.75mm * 156.75mm; Encapsulation: EVA ethylene vinyl acetate copolymer; Aluminum Frame Process: Anodized aluminium / Color : Silver; Junction Box: IP67 waterproof rating; The Maximum System Voltage: DC 1000V; The Maximum Fuse Rating: 15A; The Maximum Reverse Current: 15A; Maximum Frontal Static Load (Snow Load): 5.4 KPa; Operating Temperature: -40°C~85°C; The Maximum Static Load Back Surface (Wind Load): 2.4 KPa; Hail Impact Test (Hail Diameter/Impact Velocity): 25mm / 23m/sen