High-quality A-grade solar cells from SunPower. Very high module efficiency of up to almost 24%. The surface is made of tempered ESG solar glass with a weatherproof coating. It features a corrosion-resistant black aluminum frame for extended outdoor use with pre-drilled mounting holes. The IP68 junction box includes a 90 cm long 4 mm² double insulated solar cable and solar plug. Two integrated bypass diodes minimize power loss in shaded conditions. A special anti-reflective coating allows for more light absorption. The white back sheet minimizes heat effects and energy loss. This product is lighter and smaller than traditional solar panels.