... .Aluminium6063-T5 3.Anodized,powder coating 4,OEM welcomed aluminum extruded profile for speaker shell ContentsSpecificationsThickness0.8-4.0mm or as client ... /T5/T6, etcSurface TreatmentOxidized, Electrophoretic, Mill finished, Anodizing, Power coating, PVDF coating, Wooden coating, etc.Series40 Series, 50 Series, 55 Series ... -0.65less0.250.171-0.172≤0.1≤0.1 aluminum extruded profile for speaker shell