... Design,quick sample 4)Various Size Smart Dimming Ballast T5 power Shell/ Housing/ Case/ CasingSpecification:Material: Alluminum Alloy: ... T1, T4, T5, T6, H12Shape:Square, Rectangle Shell/ Case/ HousingSize: Flexible SizeSurface Treatment: Anodized, Power Coating, Sandblasting, ... Aluminum extruded profile/ Aluminum Power Supply Shell, Housing, Case, Casing use for the cover of Switching Power Supply, ...