Listing is for 2 items - sold as a pair Power: 410 W Power density: 210 W/m2 Framing type: Standard Structure: Glass/Foil Back(side) Color: Black Product warranty: 15 years Power warranty: 25 years @ 84.8 % Snow load: 5400 Pa Wind load: 2400 Pa Length: 1722 mm Width: 1134 mm Thickness: 30 mm Weight: 21 kg Technology (Cell): Mono PERC Number of cells: 54x1/2 cut cells Frame color: Black Plug type (DC connection): Original MC4 Origin: China STC module efficiency: 21.0 % 1st power degradation: 2 % Year 2-25 power degradation: 0.55 % Vmpp: 31.09 V Impp: 13.20 A Voc: 37.33 V Isc: 14.06 A Temperature coefficient Isc: 0.0448 %/K Temperature coefficient Voc: -0.246 %/K Temperature coefficient Pmax: -0.330 %/K Application: Residential