10x 5x 440W solar panels from a world-leading brand Longi or Trina.Key features:Half-cell modules and PERC design deliver high output.Low degradationBetter energy yield with low irradiance performance.High power-output to size ratio.ElectricalPeak power 440WDimensions: 1722 x 1134 x 30 mmProduct Warranty: 12 yearsWarranty on output: 25 yearsEfficiency: 21%