190W Monocrystalline Solar Panel TUV,CE,MCS,UL,CEC,IEC61215 and IEC61730,ISO9001, ... .4lbs)Front Glass: High Transparency Solar Glass 3.2mm(0.13inches)Frame:Anodized Aluminium alloy(Siliver or Black)Junction Box: IP 67 ... years 90% of power output25 years 80% of Power output Mono 190W Solar Panel with +3% positive tolerance