Using breakthrough technology, First Solar's FS-272 CdTe thin film solar panel incorporates advanced thin film technology to improve solar panel efficiency. Common applications include commercial and residential grid-tied solar systems. Reliable: 25-year limited warranty on power output. Engineering Excellence:High solar panel efficiency for an outstanding balance of size and weight to power and performance. Superior light absorption which maximizes performance and higher power in hot climates and cloudy conditions compared to crystal silicon cell modules. Nominal Voltage: 66.6 Volts Pmax Maximum System Voltage: 1000 Volts 12kg 1200mm x 600mm x 6.8mm (4' x 2' x 1/4 Approx) Frameless Connector: MC3 for both panels and combiner box These are new but old stock and never installed.