... EVAFrame: clear anodized aluminum alloy, 50mm thickness, silverDimensions (L x W x H): 1,640x 990 x50mmWeight: 20kgHeavy mechanical load: 5 ... yearsCertificates:TUV, IEC, CE,CQC and SGS 250w ploy photovoltaic solar panel with solar cells/CE,IEC,TUV cetificates