... Size:25*35,35*35,30*35,40*25,46*40,50*35,57.5*50,46.4*46.4 etc.(3).Various ... in size and color.Aluminum Frame Used for Solar panelA).Features ... ). Anodizing:(Clear,silver,golden,bronze,other muiticolar.)(2). Electrophoresis(3). Powder,polishing,PVDF,Sandblasting,etcStandard: GB/75237-2004,Q/ ... glad to offer you more details. Solar Aluminium Frame(Various size section)