Maximum power (watt):27wProduction tolerance:+3%/-3%Maximum power voltage:35.28VMaximum power current:7.94AOpen circuit voltage:44.75VShort circuit current:8.45AWeight:26KGFrame(type, material and thickness) Anodized Alum. Alloy 45mm thicknessNumber of cells:72pcsBy pass Schottky diode(3pcs):10AType of junction box:TUV certified junction box Certificates:CE, ROHS,TUV,IECQuality guarantee:2years product warranty,10years 90% and 25years 80% of the power

275w Polycrystalline Silicon for solar system