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this a 420 watt solar panel, that is right 420 watt , built in America by Americans , these panels are made by hightec solar there panels are now in testing for UL 1703 certification, when this is done there production will be sold out well in to the future, they made these A grade top quality panels for the common man just like them, as hard as it is to interconnect these days this panel is your answer, great for EV charging and all other solar electric projects, with full mono perc cells they are not that cut cell crap, with white back sheet, they are tested full power and have full warranty, these 24 volt solar panels are ready for all your needs, they can be used for commercial or residential settings, they are 77 inch x 39 inch 50 pounds, perfect for that small place, they can be connected in series for 48 volt and 72 volt systems, these are not flimsy panels no they are hardy with 3.2mm tempered glass fronts, the 5 buss bar mono crystalline cells make these panels perfect for low light areas, 35mm heavy duty frames that can be used in a bolt down or clamp system, this panel has the same diodes as all manufactures, this panel has A transferable 25 yr. limited output warranty, a copy will be sent with every panel, we are proud to be assembling panels in America, this panel is made with American and imported materials as all American solar panels are, we have been in business for 20 years and are happy to bring these new products to market, we did a flash test , we will supply a copy of the test sheet with each panel, where is your panels test sheet if you want the 30% tax credit (this is from IRS site) The solar PV system is new or being used for the first time. The credit can only be claimed on the “original installation” of the solar equipment. this is a federal crime Electrical Data Maximum Power Output: 420 Watts Max Operating Voltage (Vmpp): 42.7 Volts Max Operating Current (Imp): 9.9 Amps Open Circuit Voltage (Voc): 50.3 Volts Short Circuit Current (Isc): 11.4 Amps Module Efficiency: 19.2% Temperature coefficient of Voc: -0.31% °CTemperature coefficient of power: -0.29% °CTemperature coefficient of Isc current: ±0.05% °CNOCT (nominal operating cell temperature): 45 ° C (± ° C